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This report summarizes information collected on mountain lions (Puma concolor) in North Dakota by the North Dakota Game and Fish Department (Department) for the period beginning 1 January 2006 and ending 31 July 2007. Lion sightings were recorded by Department personnel, and included reports by the general public, deer hunters, fur hunters and trappers, and Department, U.S.D.A Wildlife Services, Theodore Roosevelt National Park (TRNP) and Three Affiliated Tribe (TAT) employees. The Department proposed a second lion season in the Governor’s 2006-2007 Small Game and Furbearer Hunting Proclamation, which was approved. Similar to the first season, an agreement was made with TAT to include lions taken from Fort Berthold Reservation (Reservation) in the five lion quota. A mandatory check-in of intact carcasses was required, and information from lions killed on the Reservation outside of the hunting season also was shared with the Department. Following the season, a snow track survey for lions in the North Dakota Badlands (Badlands) was conducted in cooperation with U.S.D.A Wildlife Services and TRNP. Efforts to educate North Dakota residents about lions continued and Department biologists gave 52 presentations on lions to a variety of audiences. The Department also met with TRNP and South Dakota State University researchers to discuss potential cooperative research opportunities. Although no formal research project was initiated, on 26 November 2006, an incidentally trapped subadult male lion that was reported to the Department was released after fitting it with a radio-collar. This was the first lion radio-collared in the state by the Department. The animal has remained in the Badlands, traveling over an area of about 140 square miles.
In 2006, 218 reports of mountain lions were recorded by the Department and from 1 January through 31 July 2007, the Department received 103 reports. Of the 52 reports classified as “Verified”, 41 (82%) were either non-threatening observations of the animal (n = 8) or its sign (n = 35). Other verified sightings included seven lions (n = 4 males, n = 3 females) that died from causes other than legal hunting mortality. Of these, two subadult lions were legally shot for protection of property purposes involving outdoor domestic pets, two kittens were illegally shot, three lions (2 kittens, one adult) were captured incidentally in cable devices and/or traps set for bobcats, and one subadult lion was found dead in Lake Sakakawea. Similar to the past few years, the distribution of verified lion sightings occurred predominantly in western North Dakota, in the Badlands and vicinity, and to a lesser extent in other regions of the state. However, the lion population appears to be expanding into portions of the northern Missouri River (MR) Breaks based on a greater number of verified sightings in the region.
Unlike the first experimental mountain lion season in 2005-2006, when all five lions were taken from the Badlands and vicinity, only one lion during the 2006-2007 season (illegally harvested female kitten) was taken from the region. The remaining four animals (2 males, 2 females) were harvested in prairie-dominated landscapes in Kidder, Bottineau, and Morton counties, and along the Missouri River in McLean County, respectively. The fact that two of the four animals taken outside of the Badlands were 3-4-year-old females was interesting because females typically are philopatric. Similar to the first season, harvested lions were in good physical condition and good to fair nutritional condition. The preliminary genetic relatedness results provided evidence that indicates multiple breeding aged female mountain lions have occurred in the Badlands for at least the past decade, and verified sightings in 2007 indicate continued expansion of the species in North Dakota. Based on the age and sex composition of the animals taken in the Badlands, the lion population appears not to have been negatively impacted by the first two experimental seasons with the additional human-caused mortality. However, until more information is known about population size and distribution, the number, age, and sex of lions killed in the Badlands, including those outside of season dates, and especially adult females, should be closely monitored.
In 2005, the North Dakota Game and Fish Department (Department) assessed the current status of mountain lions in North Dakota as directed by Section 2 of House Bill 1102, enacted by the 2005 legislature (North Dakota Game and Fish Department 2006). The Department reviewed reported sightings of lions from the recent past (2001-2005), surveyed hunters for sighting information, mapped suitable lion habitat throughout the state, and initiated an experimental season with a quota of five animals. Although most of North Dakota was unsuitable for lions, the habitat suitability map identified the North Dakota Badlands (Badlands) and associated Missouri River (MR) Breaks (about 2% of the state’s land area) as having a sufficient amount of suitable habitat to support a small resident population. Data from verified reports of sightings and the experimental season indicated lions either had recolonized or were in the process of recolonizing a portion of their former range in the Badlands. Based on an initial analysis of habitat quality, suitable habitat in the Badlands and MR Breaks could support an average of 45 to 74 resident adult animals under a management scenario with no harvest mortality; this was not an estimate of the current population size, but rather an estimate of habitat potential for the area. Plans for 2006 and 2007 included continuing to record and verify reported sightings of lions, surveying hunters for sighting information, testing the habitat suitability map, conducting field surveys to monitor the population, coordinating with the Three Affiliated Tribes (TAT) and other agencies on lion management issues, continuing with education efforts and conducting a second experimental harvest. This report summarizes information collected on mountain lions in North Dakota by the Department from 1 January 2006 through 31 July 2007.
Reported sightings
Reported mountain lion sightings by the public were recorded on Large Carnivore Report
Forms (Appendix I) by Department personnel and subsequently entered into a web-based database. In
addition to containing locations (i.e., Township, Range, Section or Latitude/Longitude coordinate)
and specific information on the nature of the sighting, attempts were made to verify reports by
obtaining physical evidence (i.e., video of animal, photographs of lions or their tracks, scat,
hair, scrapes, kill sites, etc.). After investigating reports (via phone conversation or on-site
visit), sightings were classified according to their validity, as “Unfounded”,
“Improbable unverified”, “Probable Unverified” or “Verified”.
Sightings were classified as “Verified” when there was physical evidence of the
reported event or the reporting party was “vouched for” as a credible witness by
Department personnel. Sightings were classified as “Probable unverified” when there was
no physical evidence for the sighting but the description of the animal or the circumstance of the
sighting was credible. Sightings were classified as “Improbable unverified”, when there
was no physical evidence for the sighting and the description of the animal or the circumstance of
the sighting was suspect; in these instances, although there was a probability that the sighting
was that of a mountain lion, the probability was considered low. Sightings were classified as
“Unfounded” when, upon investigation, they were determined to be something other than a
mountain lion. Sightings of lions or their sign documented during Department or other agency work
(i.e., by Department Biologists monitoring radio-collared bighorn sheep, U.S.D.A Wildlife Service
Specialists investigating predator complaints or while conducting other work, or field personnel
conducting the lion snow track survey, etc.) also were recorded and added to the database.
Deer hunter observation questionnaire and furbearer harvest survey
Questions were added to the Department’s 2006 Deer Hunter Observation Questionnaire
and 2006-07 Furbearer Harvest Survey (Appendix II) to gain more information on the distribution of
mountain lion sightings in North Dakota and provide baseline data for documenting state-wide
population trends. Data collected on the Deer Hunter Observation Questionnaire included, for a
sample of hunters in each of the 37 deer gun hunting units in North Dakota, total number of hours
spent hunting (“observing”) wildlife opening weekend of deer gun season and number of
lions seen. The data were used to calculate a population index for each hunting unit using the
number of lions seen per 1000 hours of observation. In 2006, a total of 5,228 surveys were sent to
deer hunters immediately prior to opening weekend of deer gun season (11 and 12 November). A
question on lions also was added to the 2006 Furbearer Harvest Survey to measure hunter effort for
the species by county. This questionnaire surveyed 5,000 hunters and trappers statewide who either
bought a furbearer stamp or a sportsman’s license for the 2006-07 season. On the annual
survey, the lion was added to the list of species hunted. Respondents were asked to record the
number of days they spent hunting lions, the county of most activity, and number harvested.
Mountain lion season
The Department proposed a second mountain lion season for North Dakota in the
Governor’s 2006-2007 Small Game and Furbearer Hunting Proclamation, which was approved
(Appendix III). The quota for the state-wide season was five animals and all animals taken for any
reason (e.g., lions taken by U.S.D.A Wildlife Services, the Department, private landowners in
defense of livestock, road-killed animals, incidental animals taken by traps or cable devices, and
animals taken for human safety issues) counted toward the quota. Any lion other than kittens (lions
with visible spots) or females accompanied by kittens could be taken during the season. Dates,
locations (Township, Range and Section), and method of take were recorded for all animals
harvested. Lions were weighed and sex identified. A cursory examination was performed on the
carcasses prior to skinning the animals. Ages were determined based on tooth wear and fur color
characteristics (Anderson and Lindzey 2000). Bodies were examined for wounds from intraspecific
aggressive encounters (e.g., scratches or puncture wounds on face or limbs) or capturing prey
(e.g., broken limbs, bruising, etc), presence of porcupine quills or ectoparasites, and to assess
overall nutritional condition. Various body measurements were taken (Logan and Sweanor 2001), and
distances between upper and lower canines were measured to build a database on bite distances for
aiding in the identification of wild and domestic animal kills made by cougars in North Dakota. For
females, teat size and shape were examined for evidence of lactation (Anderson and Lindzey
2000).
Necropsies were performed on harvested mountain lions to assess nutritional condition, document food habits and collect other biological data. Organ (mesentery, heart and kidney) fat reserves were examined and subjectively categorized as low, moderate or high. Additionally, percent kidney fat was determined by weighing kidneys (K), and perirenal (PR) and Riney kidney (RK) fat (Riney 1955) to the nearest gram and using the following equation: (PR fat weight + RK fat weight) / K weight * 100% = Percent Kidney Fat. Stomach and intestinal tracts were collected to document food habits and examine internal parasites. For females, reproductive tracts were examined for evidence of breeding activity. Samples of muscle tissue were collected and sent to the
U.S. Forest Service Rocky Mountain Research Station, Missoula, Montana for genetic-relatedness analyses of individuals, and to build a database as part of a cooperative research effort between the Department and researchers and biologists in adjacent states. Also, in cooperation with U.S.D.A. Wildlife Services, blood samples of lions were collected to test for disease (e.g., tularemia and sylvatic plague).
Snow track survey
After the 2006-2007 mountain lion season ended, a snow track survey for lions in the
Badlands was conducted by the Department in cooperation with U.S.D.A. Wildlife Services and TRNP.
The purpose of the survey was to document continued persistence of the species in the region, aid
in documenting range expansion in the Badlands and potentially record locations of family groups.
Seven routes, each about 60 miles (min, max = 58, 65) and primary roads traveling through the north
and south units of TRNP were surveyed (Figure 1). Routes were distributed throughout the Badlands
and each route traveled through a portion of what was considered high-quality lion habitat based on
conversations with Department Biologists and Conservation Officers. During morning hours after a
2-4 inch snow fall, at dawn, or shortly after, survey routes were driven by one or two person teams
at 15-20 m.p.h., and any lion tracks encountered on the route were recorded (See Appendix IV for
survey instruction sheet and data forms). Attempts were made to repeat each route two times during
distinct snow events.
Mountain lion sightings
A total of 218 reported mountain lion sightings was documented by the Department during
2006. Similar to previous years (2005 and 2004) sightings were reported all months of the year
(Table 1). The greatest numbers of reported sightings occurred in October (n = 34) and November (n
= 40). By sighting classification, 26 reports (12%) were verified as being a lion (Table 2, Figure
2, Appendix V). Of these, the majority (n = 15 or 54%) of sightings were documented by observations
of tracks of the animal (Table 3). Approximately half (48%) of the reports were classified as
either ‘Improbable unverified’ (n = 58) or ‘Unfounded’ (n = 53). The
majority of reports classified as ‘Unfounded’ (54%) were due to either tracks or
sightings of domestic dogs or other canines being mistaken for lions (Table 4). Eighty-six reports
(39%) could not be ruled out as being legitimate sightings, but lacked the evidence for
verification. These ‘Probable unverified’ sightings occurred in counties throughout
North Dakota (Figure 3). However, Dunn, McKenzie, Ward and McHenry counties received a greater
number of these reports compared to other counties.
From 1 January - 31 July 2007, of 103 reports of mountain lion sightings recorded by the Department, 26 were classified as “Verified” (Appendix VI, Table 5, Figure 4). These reports included observations of the animals tracks (n=16), visual observations (n=2), domestic animal (cow) killed by a lion (n=1), kills of radio-collared bighorn sheep (n=5), incidentally captured animals by bobcat trappers (n=3), and animals shot for protection of property purposes (n=1), found dead (n=1), or killed illegally (n=1).
Deer hunter observation questionnaire
A total of 1,575 usable Deer Hunter Observation Questionnaires were returned to the
Department a return rate of 30.1%. Of these, 14 respondents (2.4%) from ten hunting units (2J1,
2J2, 2K1, 2K2, 3A1, 3A4, 3B1, 3E2, 4A and 4C; Figure 5) reported they saw a mountain lion while
hunting during opening weekend of the deer gun season (Table 6). Units 4A had 2 reported sightings
and the highest population index value (Value = 3.91), followed by Unit 3A1, with 2 sightings and a
population index value of 3.31.
Mountain lion season
Five mountain lions (2 males, 3 females) were harvested during the 2006-07 statewide season (Table 7; Figures 6 and 7), which began 2 September 2006 and ended 9 November 2006 when the quota was filled. The five animals were harvested from McKenzie, Bottineau, McLean, Kidder and Morton counties. The first animal, a 26 lb female (F7), was considered illegally harvested because it was a 4-5-month-old kitten. This animal was taken 16 September during the youth deer hunting season. The second and third lions were taken opportunistically by hunters while pursuing upland game birds (pheasants). The second lion, a 3-4-year-old, 104 lb female (F8), was killed 18 October, and the third lion, a 1.5-2.5-year-old, 107 lb male (M9) was taken 28 October. The fourth lion, a 3-year-old, 100 lb female (F10), was killed 6 November; F10 was first accidentally hit by a vehicle on County Road 31 at approximately 2100 hrs, was wounded, and subsequently was shot. The fifth lion, a 3-4-year-old, 110 lb male (M11), was killed 9 November. M11 was observed entering a culvert under County Road 45.5 in New Salem at approximately 0700 hrs, and was shot in the culvert.
Similar to the first season, harvested mountain lions were in good physical condition (no scratches or puncture wounds on face or limbs, or broken limbs, bruising, etc., were apparent on any of the animals) and good to fair nutritional condition based on cursory examination of the body and intestinal tract and examination of organ fat reserves. Females F8 and F10 had not lactated, nor did either animal have placental scars, indicating a past litter.
Other mountain lion fatalities and incidental lion captures in traps/cable devices
Between 1 January 2006 and 31 July 2007, seven mountain lions (n = 4 males, n = 3 females) died from causes other than due to hunting mortality (Figures 6 and 7; Appendices V and VI). Two lions [66 lb., 1.5-2.5-year-old female (F6); 112 lb, 2.0-2.5year-old male (M18)] were shot legally for protection of property purposes. Three animals were cable restrained/trapped incidentally by bobcat trappers; of these, one lion [48 lb., 4-5 month-old male (M14)] was found dead in a cable device and the other two animals [42 lb, 4-5-month-old male (M13); 80 lb, 10+year-old female (F15)] were euthanized due to trap/cable device related injuries that were believed to inhibit their ability to survive in the wild. The remaining two animals were taken on the Reservation and reported to the Department by TAT; one lion [46 lb, 6-8-month-old female (F17)] was shot illegally, and another lion [unknown weight, 1.5-2.5-year-old male (M16)] was found dead in Lake Sakakawea.
A 108 lb, 1.5-2.5-year-old, male mountain lion (M12), was caught in a foothold trap that had been set for bobcats in the Badlands. The animal was reported to the Department the evening of 25 November 2006. The following morning a Department capture crew chemically immobilized the lion and released it on site. Prior to its release, it was fitted with a radio-collar. The lion was located weekly by fixed wing air craft (Figure 8). Since its capture date through 31 July 2007, the animal has remained in the Badlands, traveling over an area of about 140 square miles (n=40 locations; annual home range estimate was generated using Minimum Convex Polygon method).
Genetic analyses
A non-technical report describing results of preliminary genetic analyses of mountain
lions in North Dakota was provided to the Department by researchers at the U.S.F.S. Rocky Mountain
Research Station, Missoula, Montana (Schwartz and Pilgrim 2007). Tissue samples from 17 lions
(Figures 8 and 9; Appendix VII) were analyzed at 13 variable microsatellite loci for genetic
variation and relatedness; an additional six microsatellite loci for these samples will be examined
prior to completion of analyses. Overall, given the genetic variability detected with the markers
analyzed, the probability that two random individuals matched by chance alone was 1 in 2,029,221.
Based on initial results, statements of potential relatedness (e.g., lion ‘A’ and lion
‘B’ were not likely related, were highly related, or could be related but more
information was needed) were made in response to specific questions by the Department regarding
relationships between individual lions. Additionally, initial analyses provided the sex of an
unknown lion tissue sample collected by TRNP Biologists from the South Unit of TRNP. Relatedness
statements were provided to the Department (Appendix VII).
Snow track survey
The mountain lion snow track survey was conducted two times during the winter of 2006-07.
During the first survey effort on 13 February 2007, all seven routes (433.1 miles), including the
two routes in North and South Units of TRNP (13.9 and 26.4 miles respectively) were surveyed for
lion tracks for a total of 473.4 miles traveled. Three sets of lion tracks (one from early that
morning and two older sets) were documented in the South Unit of TRNP (Figure 9). Whether or not
the tracks were from the same animal is not known; the three sets of tracks were within about four
miles of each other. No lion tracks were detected on any of the seven routes even though snow
conditions were favorable for detecting tracks of animals (anywhere from 2.5-5 inches), and many
tracks were documented (deer, turkeys, porcupines, bobcats, coyotes, cottontails, etc.) by field
personnel.
During the second survey effort, all routes with the exception of Routes 1 and 3 were surveyed on 1 March 2007, including the two routes in TRNP for a total of 349.9 miles traveled. No mountain lion tracks were recorded during the survey effort, however, blowing snow likely reduced visibility of tracks on a few of the routes (Routes 1, 2 and 3). For example, observers on Route 2 believed one snow track to be a lion track, based on the size of the animal and trail pattern, but because the observers were not 100% certain due to blowing snow that filled the tracks, this track was not considered a verified lion track.
Educational efforts and coordination with other agencies and researchers
To continue to educate residents of North Dakota about mountain lions (i.e., their natural history and ecology, physical description of the animal and its tracks, how to live and recreate in lion country, what to do if you see a lion, etc.) and update other wildlife professionals on the status of the species, Department Outreach Biologists and the Furbearer Biologist gave general audience presentations and information updates on lions to a variety of groups (Table 8). Department Biologists also provided interviews to major newspapers in the state about lions, and updated residents on the lion season through press releases, public service announcements, and other media outlets. An educational brochure about lions in North Dakota was made available to the public at District Department Offices, TRNP and U.S.D.A Wildlife Service Headquarters, U.S. Fish and Wildlife Service Refuges, and to TAT. Additionally Department Wardens and U.S.D.A Wildlife Service Specialists provided brochures to people who reported sightings or potential lion depredations to livestock, and biologists provided brochures at various events (i.e., North Dakota State Fair, Becoming and Outdoor Woman Camp, high schools etc.).
In addition to communicating with the public about mountain lions, the Department met with other agencies and researchers to share information and discuss cooperative survey and research efforts. For example, the Department met with TAT to plan a snow track route on the Reservation in the MR Breaks during the winter of 20072008 to add to the survey routes in the Badlands and in TRNP. The Department continued to collect samples as part of a cooperative effort with U.S.D.A. Wildlife Services to monitor carnivore diseases (sylvatic plague and tularemia). Additionally, meetings were held with TRNP and the Principal Investigator (PI) of the South Dakota mountain lion research project, to discuss cooperative research possibilities, including sharing data on lions collected by TRNP, listening during routine telemetry flights for radio-collar signals of missing South Dakota collared study animals, and sharing results of genetic analyses. The Department continues to evaluate the possibility for more research.
Discussion
Although the Department received a greater number of reports of mountain lion sightings in
2006 than previous years, the spatial and descriptive characterization of the sightings were
similar to past years (North Dakota Game and Fish Department 2006). The distribution of verified
lion sightings during this report period occurred predominantly in western North Dakota, in the
Badlands and vicinity, and to a lesser extent in other regions of the state. Also, the majority of
reported sightings in 2006 occurred during months associated with hunting activity (October and
November), when a greater number of people were traveling to, and hiking in, remote country
throughout the state, increasing the probability of seeing a mountain lion. Furthermore, a large
percentage of reported sightings were either unverifiable due to lack of physical evidence or
turned out to be other animals, primarily domestic dogs. Of the 50 sighting reports that were
verified, 41 (82%) were non-threatening observations of either the animal or its sign (tracks or
kill sites), further supporting the fact that lions are secretive, primarily nocturnal animals that
typically avoid people. Other circumstances of verified sightings included lions being killed
legally for protection of property (n=2 domestic outdoor pet situations), killed illegally (n=2;
both were kittens), captured incidentally in bobcat cable devices/traps (n=3), or found dead in a
lake (n=1).
Based on verified mountain lion sightings, the species appears to be expanding its range in North Dakota into the northern MR Breaks region. The MR Breaks is interconnected with the Badlands and historically was part of the species range in North Dakota (Bailey 1926). According to a habitat suitability map (North Dakota Game and Fish Department 2006), the Northern MR Breaks also contained a sufficient amount of suitable habitat to sustain a small number of lions, although habitat potential for lions was lower due to reduced habitat quality (North Dakota Game and Fish Department 2006). From 2001 through 2005, only one verified lion sighting in the MR Breaks region was recorded by the Department (North Dakota Game and Fish Department 2006), whereas, in 2006 through July of this year, the Department had already documented four verified lion sightings in this region. Additionally, a female lion kitten was shot illegally on the Reservation, about 5.5 miles southwest of Mandaree. Although, technically, this kitten was shot in the Badlands, its position documented at that time the northern and easternmost location of a family group in the Badlands which was located only about 4.0 miles south and 7.0 miles west of MR Breaks. Furthermore, this past year, the TAT received a greater number of reports of mountain lion sightings on the Reservation in the MR Breaks, in Four Bears, Mandaree and New Town areas (F. Poitra, TAT Personal Communication).
Unlike the first experimental mountain lion season in 2005-2006, when all five lions were taken from the Badlands and vicinity (Killdeer Mountains and near Fairfield, North Dakota; Figures 6 and 7), only one lion during the 2006-2007 season (female kitten F7) was harvested from the region. The remaining four animals were harvested in prairie dominated landscapes (n=3; F8, F10 and M11) or along the Missouri River (n=1; M9). Especially interesting, was the fact that two of the four animals taken outside of the Badlands were 3-4 year-old females. To date, there are no reports of a breeding population of lions in large grasslands or agricultural landscapes (Cougar Management Guidelines Working Group 2005) and breeding females have not been documented in these landscapes in North Dakota. Female lions tend to be philopatric, but they are capable of dispersing long distances. Although, F8 and F10 physiologically were able to have young, upon examination, neither had ever lactated, nor did either have placental scars in their reproductive tracts indicating past litters. Whether or not F8 and F10 had established or would have established home ranges on these prairie-dominated landscapes and reproduced is not known.
The genetic results provided evidence to support the idea that multiple breeding-aged female mountain lions likely occurred in the North Dakota Badlands for at least the past decade. First, FA and FB were two subadult female lions that were killed in the Badlands on 5 September and 27 December 2004, respectively. Due to their close ages and proximity at the time of their deaths (approximately 3.5 mi straight line distance), it was believed the animals could be siblings. However, because they were not related, the mothers of FA and FB could have occurred in the Badlands from around the time the two females were born in 2003 to at least their age of independence, and perhaps longer. Additionally, FA and FB were not related to F15, the 10+ year-old female alive in the Badlands, indicating three breeding age females in the region at that time. [Note: It is possible FA and FB immigrated independently to the Badlands in 2004]. Second, F15 was old enough to be the mother of all mountain lions analyzed. She likely was a resident or immigrant to the Badlands around 1997, or possibly earlier. The fact that only three (M14, M3 and F5) of 16 animals analyzed could have been the direct offspring of this female, is further evidence to indicate other breeding-age females may have occurred in the Badlands during the lifetime of F15. Although mountain lion reports in the Badlands were sporadic from the late 1950s to the early 2000s, during the late 1990s, the Department documented two verified reports of lions in the region, and from 2001-2003 eight verified reports were documented (McKenna et al. 2004).
The genetic results provided evidence that two females occurred in the Badlands in January 2007, supplementing data from verified sighting reports that indicated species persistence in the Badlands subsequent to the 2006-2007 season. F15 likely was the mother of kitten M14, but not kitten M15. Both of these similar-aged kittens died from trap/cable device related injuries in January 2007 at locations approximately 10 miles apart (straight line distance). M14 was a healthy male kitten that would not have been able to survive without maternal care. Therefore, a breeding-age female likely was alive in the Northern Badlands until at least around the time of M14’s death. Also the blood and urine sample collected from a snow during the snow-track survey on 13 February was determined to be from a female lion based on analysis of DNA. So, as of at least February 2007, a subadult or adult (based on the size of the tracks left in snow) female lion was alive in the Central Badlands in TRNP.
The deaths of three of four mountain lions incidentally captured in cable devices and/or traps set for bobcats revealed a factor affecting survival of individual lions in this population. The 2006-2007 bobcat season yielded a record high number (n=139) of animals taken for the state, probably due to relatively high pelt prices received for these animals. Four lions (M12, M13, M14, and F15) were incidentally captured during the 2006-2007 bobcat season; M12, the radio-collared study animal, was released unharmed, whereas M13, M14 and F15 were euthanized due cable device/trap-related injuries. As mentioned above, kitten M14 was considered to be highly related to F15 and likely was from her most recent litter. Based on examination of the reproductive tract of F15, she had four kittens in her last litter. Therefore, any kittens alive at the time of her death (survival rate of lion kittens is 0.66; Logan and Sweanor 2001) would be too young to survive on their own.
Management Implications
Information collected by Department suggests that lions were present and breeding in the
Badlands at least in the past decade, and possibly earlier based on occasional verified reports
prior to 1997. However, it is difficult to assess impacts of annual harvests and additional
human-caused mortality on the population without knowing the level of reestablishment prior to
the first experimental season in 2005. An estimate of population potential for the Badlands, the
Northern MR Breaks ranged from an average of 45 ± 18 to 74 ± 27 resident adult
animals under a management scenario with no harvest mortality (North Dakota Game and Fish
Department 2006). Thus, at a minimum, the region could support an average of 27, and at a maximum,
101 resident adult lions assuming no harvest or management. Where the current population lies with
respect to these estimates is not known. Anderson and Lindzey (2005) suggested that the effect of
harvests on populations would differ depending on the age and sex composition of lions removed; in
established populations, males would easily be replaced by immigrant males and harvested subadult
females would be replaced mostly by female young of the year. However, the breeding-aged females
would be difficult to replace on an annual basis, and it is the breeding females that provide the
resiliency in a lion population. They further noted that an annual harvest composed of 10-15% of
adult females appeared sustainable for a population of mountain lions in Wyoming, but cautioned
that more isolated populations may respond differently to similar harvest rates. Thirteen lions (n
= 6 males, n = 7 females) have been taken from the Badlands since 2004. Of the females, only one
animal (F15) was considered to be a breeding age female; ages of the other six females ranged from
4.0-5.0 months to 2.5-3.0 years. Based on the age and sex composition of the animals taken in the
Badlands, the lion population appears not to have been negatively impacted by the past two
experimental seasons, with the additional human-caused mortality. However, until more information
is known about population size and distribution, the number, age, and sex of lions killed in the
Badlands, including those outside of season dates, and especially adult females, should be closely
monitored.
Anderson, C. R. Jr., and F.G. Lindzey. 2005. Experimental evaluation of population trend and harvest composition in a Wyoming cougar population. Wildlife Society Bulletin 33:179-188.
Anderson, C. R. Jr., and F.G. Lindzey. 2000. A guide to estimating cougar age classes. Wyoming Cooperative Fish and Wildlife Research Unit, Laramie, Wyoming. 2 pp.
Bailey, Vernon. 1926. A biological survey of North Dakota. North American Fauna, No. 49, 416 pp. Cougar Management Guidelines Working Group 2005. Cougar management guidelines, First edition, WildFutures, Bainbridge Island, Washington. 137 pp.
McKenna, M., J. Ermer, S. Hagen, S. Dyke, R. Kreil, G. Link and M. Johnson. 2004. Mountain lions in North Dakota: A report to the Director. North Dakota Game and Fish Department, Bismarck, North Dakota. 51 pp.
North Dakota Game and Fish Department. 2006. Status of Mountain Lions (Puma concolor) in North Dakota: A Report to the Legislative Council. North Dakota Game and Fish Department, Bismarck, North Dakota. 68 pp.
Logan, K.A. and L.L Sweanor. 2001. Desert Puma: evolutionary ecology and conservation of an enduring carnivore. Island Press, Washington, D. C. 463 pp.
Riney, T. 1955. Evaluating condition of free-ranging red deer (Cervus elaphus), with special reference to New Zealand. New Zealand Journal of Science and Technology Section B. 36:429-463.
Schwartz, M.K. and K. Pilgrim 2007. Project: North Dakota Mountain Lion (Puma concolor) Preliminary Genetics Report. U.S.F.S. Rocky Mountain Research Station, Missoula, Montana. 7 pp.
Figure 1. 2007 mountain lion snow track survey routes.

Figure 2. Verified mountain lion locations in North Dakota (2006), including seven animals harvested in 2006.

Figure 3. Counties with reported mountain lion sightings classified as “Probable unverified” in North Dakota (2006). Numbers in counties indicate number reports received by the Department.

Figure 4. Verified mountain lion locations in North Dakota (1 January – 31 July 2007).

Figure 5. Deer Gun Hunting Units in which hunters reported seeing a mountain lion while hunting deer the opening weekend (November 10-11) of the 2006 deer gun season.

Figure 6. Mountain lion mortalities in North Dakota by season (2004 - 31 July 2007)

Figure 7. Mountain lion mortalities in North Dakota by sex (2004 – 31 July 2007).

Figure 8. North Dakota mountain lion database of tissue sample locations for genetic relatedness analyses.

Figure 9. North Dakota mountain lion database of tissue sample locations for genetic relatedness analyses.

Figure 10. North Dakota Game and Fish Department 2007 mountain lion snow track survey.

Appendix I. Large Carnivore Report Form.

Appendix II. 2006 Deer Hunter Observation Questionnaire and 2006-2007 Furbearer Harvest Survey.

Appendix II-a. Deer Gun Hunting Units

Appendix II-b. Furbearer Harvest Survey

Appendix III. 2006-2007 Small Game and Furbearer Hunting Proclamation Section 23.
23. EXPERIMENTAL (QUOTA) MOUNTAIN LION SEASON:
North Dakota residents may harvest mountain lions statewide from September 1, 2006 through March 11, 2007. Shooting hours will be one half (½) hour before sunrise to one half (½) hour after sunset and any legal weapon currently allowed for furbearers is legal. No hunting or pursuing with dogs will be allowed until January 1, 2007. Snares and traps cannot be used to take mountain lions. A quota of 5 mountain lions will be allowed. Any mountain lion other than kittens (lions with visible spots) or females accompanied by kittens may be taken during the season. The limit for mountain lions is one animal per hunter per season. Once this quota is reached, the season will be closed immediately. The North Dakota Game and Fish Department will inform the public through press releases, public service announcements, and media contacts of this closure. This quota will include all lions taken by USDA Wildlife Services, North Dakota Game and Fish Department, private landowners in defense of livestock, road killed animals, incidental animals taken by traps or snares, and animals taken for human safety issues. This quota also includes mountain lions taken in accordance with tribal regulations on Indian land within the exterior boundaries of the Fort Berthold Reservation (NOTE: In the event that none of the five lions are taken on Fort Berthold Reservation, one additional lion may be taken on the reservation once the quota has been reached and the statewide season is closed.). This quota does not include mountain lions taken on other Indian land within the exterior boundaries of a reservation. Any mountain lion that is taken must be reported to the Department within 12 hours and the entire intact animal must be submitted for analysis. Legally taken animals will be returned to the hunter following analysis.
Appendix IV. Mountain Lion Snow Track Survey Instruction Sheet and Data Form.
Directions:
Supply list:
Other items: GPS Unit and Digital camera 47
Route _____________ Date______________
Name(s) ___________________________________________
|
Time
|
Temp
°F |
Snow
depth (in) |
Precipitation:
Dry Fog: light, moderate, heavy Rain: light, moderate, heavy Sleet: light, moderate, heavy Snow: light, moderate, heavy |
% cloud
cover 1. 0-25% 2. 26-50%
3. 51-75% 4. 76-100% |
Wind
Velocity 1. 0-10 mph 2. 11-20 mph 3. 20-30 mph 4. >30 mph |
Comments
|
|
|---|---|---|---|---|---|---|---|
|
Start
Route |
|||||||
|
Finish
Route |
| Track # | Time | GPS coordinate or Township Range Section |
Direction Of Travel |
Number of Individuals |
Number Photos Taken |
Comments |
|---|---|---|---|---|---|---|
Appendix V.Database of verified mountain lion locations (not including harvested mountain lions) in North Dakota 2006.
|
No.
|
Date
|
Type of sighting/evidence
|
Location (County)
|
|---|---|---|---|
|
1
|
1/21/06 | Tracks (snow) | McKenzie |
|
2
|
2/15/06 | Wildlife kill (Bighorn sheep ewe) Scat | McKenzie |
|
3
|
2/27/06 | Tracks (snow) | McKenzie |
|
4
|
2/27/06 | Tracks (sand/mud) | Billings |
|
5
|
4/12/06 | Wildlife kill (Bighorn sheep ewe) Tracks | Dunn |
|
6
|
5/12/06 | Sighting: Credible witness | Mercer |
|
7
|
5/26/06 | Tracks (hardened clay) | McKenzie |
|
8
|
6/22/06 | Tracks | McKenzie |
|
9
|
7/9/07 | Legal shooting of a female lion (66 lbs., 1.5-2.0 yrs old) | McKenzie |
|
10
|
8/2/06 | Tracks (mud) | Billings |
|
11
|
Aug/Sept 2006 | Tracks (mud) | Rolette |
|
12
|
9/1/06 | Sighting | McKenzie |
|
13
|
9/15/06 | Tracks | Billings |
|
14
|
9/26/06 | Tracks (mud): Credible witness | McKenzie |
|
15
|
10/6/06 | Tracks | Dunn |
|
16
|
10/20/06 | Sighting (female & two kittens) Tracks (snow) | McKenzie |
|
17
|
10/21/06 | Sighting Tracks | McHenry |
|
18
|
10/21/06 | Sighting Wildlife kill (white-tailed deer); tracks | McHenry |
| 19 | 10/24/06 | Wildlife kill (Bighorn sheep ewe) Tracks and scat | McKenzie |
| 20 |
10/27/06 | Sighting: Credible witness | Bottineau |
| 21 |
10/27/06 | Tracks | Billings |
| 22 |
10/28/06 | Tracks | Pierce |
| 23 |
11/7/06 | Tracks (mud) | McKenzie |
| 24 |
11/20/06 | Tracks (sand) | Billings |
| 25 |
12/9/06 | Tracks (snow) | Dunn |
| 26 |
12/10/06 | Wildlife kill (white-tailed deer) Tracks (snow) | Dunn |
Appendix VI. Database of verified mountain lion locations (not including harvested mountain lions) in North Dakota 2007 (1 January – 31 July 2007)
|
No.
|
Date
|
Type of sighting
|
Location (County)
|
|---|---|---|---|
| 1 | 1/15/07 | Incidental trapping; euthanized (Shot); M13; 4-5 months; 42 lbs. | McKenzie |
| 2 | 1/21/07 | Tracks (snow) Porcupine carcass | McKenzie |
| 3 | 1/30/07 | Incidental capture; found dead in neck cable device. M14; 4-5 months; 48 lbs. | McKenzie |
| 4 | 2/8/07 | Tracks (snow) | Mercer |
| 5 | 2/9/07 | Tracks (snow) | Dunn |
| 6 | 2/13/07 | Tracks (snow): 1of 3 sets documented during the lion snow track survey | Billings |
| 7 | 2/13/07 | Tracks (snow): 2 of 3 sets documented during the lion snow track survey | Billings |
| 8 | 2/13/07 | Tracks (snow): 3 of 3 sets documented during the lion snow track survey | Billings |
| 9 | 2/18/07 | Incidental trapping; transported to Bismarck Zoo; Euthanized due to snare/ trap-related injuries; F15; 10+ years old; 80 lbs. | McKenzie |
| 10 | 2/26/07 | Sighting and tracks (snow) | Mercer |
| 11 | 3/01/07 | Tracks (snow): Credible witness | Billings |
| 12 | 3/7/07 | Tracks | Dunn |
| 13 | 3/8/07 | Tracks | Mercer |
| 14 | 3/9/07 | Wildlife kill (Bighorn sheep ewe) Tracks | McKenzie |
| 15 | 3/12/07 | Tracks (snow) | McKenzie |
| 16 | 3/13/07 | Domestic animal kill (cow) | Williams |
| 17 | 3/16/07 | Tracks (snow) | Mountrail |
| 18 | 3/26/07 | Wildlife kill (Bighorn sheep ewe) | McKenzie |
| 19 | 4/13/07 | Wildlife kill (Bighorn sheep) | Mckenzie |
| 20 | 4/14/07 | Tracks | Mckenzie |
| 21 | 4/17/07 | Sighting: Credible witness | McKenzie |
| 22 | 5/12/07 | Carcass found in Lake Sakakawea | Montrail |
| 23 | 5/27/07 | Illegal shooting: Kitten F17; Out of season | McKenzie |
| 24 | 5/30/07 | Legal shooting: M18; Protection of property | Divide |
| 25 | 6/19/07 | Wildlife kill (Bighorn sheep) Scat | McKenzie |
| 26 | 6/27/07 | Wildlife Kill (Bighorn sheep ram) | Mckenzie |
| Lion ID | Sex | Reason for Take | Season | Method of Take | Date | Age | Weight (lbs) | Location (County) |
|---|---|---|---|---|---|---|---|---|
| F-A | F | Human safety | N/A | Shot by bow and arrow by archery hunter | 9/5/04 | 1-2 yrs | 80 | McKenzie |
| F-B | F | Illegal kill | N/A | Incidental capture in cable device; Shot | 12/27/04 | 1.5-2.5 yrs | -- | McKenzie |
| F1 | F | Legal harvest:1of 5 | 2005-06 | Shot | 11/16/05 | 2.5-3.0 yrs | 92 | McKenzie |
| M2 | M | Legal harvest:2of 5 | 2005-06 | Shot | 11/17/05 | 1.5-2.0 yrs | 99 | Dunn |
| M3 | M | Legal harvest:3of 5 | 2005-06 | Shot | 12/31/05 | 4.0-5.0 yrs | 140 | McKenzie |
| M4 | M | Legal harvest:4of 5 | 2005-06 | Shot | 1/6/06 | 2.0-2.5 yrs | 111 | Billings |
| F5 | F | Legal harvest:5of 5 | 2005-06 | Shot | 1/16/05 | 4.0-6.0 mos | 39 | McKenzie |
| F6 | F | Property Protection | N/A | Shot | 7/12/06 | 1.5-2.0 yrs | 66 | McKenzie |
| F7 | F | Illegal harvest:1of 5 (spotted kitten) | 2006-07 | Shot | 9/16/06 | 4-5 mos | 26 | McKenzie |
| F8 | F | Legal harvest:2of 5 | 2006-07 | Shot | 10/18/06 | 3-4 yrs | 104 | Bottineau |
| M9 | M | Legal harvest:3of 5 | 2006-07 | Shot | 10/28/06 | 1.5-2.5 yrs | 107 | McLean |
| F10 | F | Legal harvest:4of 5 | 2006-07 | Vehicle collision; Shot | 11/06/06 | 3 yrs | 100 | Kidder |
| M11 | M | Legal harvest:5of 5 (Human safety) | 2006-07 | Shot | 11/09/06 | 3-4 yrs | 110 | Morton |
| M12 | M | Incidental take; Hair collected for DNA analyses | N/A | N/A; Incidental trapping Radio-collared study animal | 11/26/06 | 1.5-2.5 yrs | 108 | Billings |
| M13 | M | Incidental take | N/A | Incidental trapping; Euthanized (Shot) | 1/15/07 | 4-5 mos | 42 | McKenzie |
| M14 | M | Incidental take | N/A | Found dead in neck cable device | 1/30/07 | 4-5 mos | 48 | McKenzie |
| F15 | F | Incidental take | N/A | Incidental trapping; Transported to zoo; Euthanized: cable device/ trap-related injuries | 2/18/07 | 10+ years | 80 | McKenzie |
| U-C | U | N/A | N/A | N/A; Blood in urine collected in fresh snow track in south unit TRNP | 2/12/07 | N/A | N/A | Billings |
Relatedness statements:
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2006 |
6
|
8
|
7
|
12
|
18
|
23
|
22
|
19
|
18
|
34
|
40
|
11
|
218
|
| 2005 |
9
|
6
|
5
|
3
|
5
|
8
|
17
|
14
|
12
|
12
|
14
|
15
|
118
|
| 2004 |
4
|
1
|
4
|
1
|
4
|
4
|
3
|
8
|
11
|
11
|
12
|
4
|
69
|
| Total |
19
|
15
|
16
|
16
|
27
|
35
|
42
|
41
|
41
|
57
|
66
|
30
|
405
|
|
Sighting Classification
|
2006 | 2005 | 2004 |
|---|---|---|---|
|
Unfounded
|
53 (24)
|
30 (25)
|
13 (19)
|
|
Improbable Unverified
|
53 (24)
|
26 (22)
|
21 (30)
|
|
Probable Unverified
|
86 (39)
|
44 (37)
|
27 (39)
|
|
Verified
|
26 (12)
|
18 (15)
|
8 (12)
|
|
Total
|
218
|
118
|
69
|
|
Type of sighting (sign or event)
|
Type of evidence
|
Number Reports
|
|
|---|---|---|---|
|
Field sign
|
Tracks of animal
|
15
|
|
|
Bighorn sheep kill
|
3
|
||
|
White-tailed deer kill
|
1
|
||
|
Subtotal
|
19
|
||
|
Visual observation
|
Credible Witness
|
2
|
|
|
Video/photo
|
1
|
||
|
Confirmed with Tracks
|
1
|
||
|
Confirmed with deer kill
|
1
|
||
|
Subtotal
|
5
|
||
|
Human-caused mortalities
|
Illegally killed
|
1
|
|
|
Legally killed
|
1
|
||
|
Subtotal
|
2
|
||
|
Total
|
26
|
||
|
Type of sighting (sign or event)
|
Mountain lion mistaken for:
|
Number Reports
|
|---|---|---|
|
Field sign (tracks of animal)
|
Domestic dog/canine | 18 |
|
Visual observation
|
Domestic dog/canine | 5 |
| Coyote | 3 | |
| Fox | 2 | |
| Unknown animal | 5 | |
| Domestic house cat | 5 | |
| Deer | 1 | |
|
Domestic animal: non-lethal attack
|
Horse: Barb wire/fence | 3 |
| Horse: Unknown | 2 | |
| Sheep: Domestic dog/ large canine | 2 | |
| Cow: Unknown | 1 | |
|
Domestic animal: lethal attack
|
Hog: Canine | 1 |
| Cow: Not attacked/ Fed on by coyotes | 1 | |
| Chickens: Canine | 1 | |
| Horse: Unknown | 1 | |
|
Video
|
Domestic house cat | 1 |
|
Total
|
53 | |
|
Type of sighting (sign or event)
|
Type of evidence | Number Reports | |
|---|---|---|---|
|
Field sign
|
Tracks of animal
|
12
|
|
|
Bighorn sheep kills
|
5
|
||
|
Subtotal
|
17
|
||
|
Visual observation
|
Credible Witness
|
2
|
|
|
Human-caused mortalities
|
Illegally killed
|
1
|
|
|
Legally killed
|
1
|
||
|
Incidentally trapped/snared
|
3
|
||
|
Subtotal
|
5
|
||
|
Lion carcass
|
Carcass found in thawing lake
|
1
|
|
|
Domestic animal kill (cow)
|
Photographs of tracks
|
1
|
|
|
Total
|
26
|
||
| Hunting Unit | No. Respondents | No. lions seen | No. Hours hunted | Population Index No. reports / 1000 hours hunted |
|---|---|---|---|---|
| 2J1 |
48
|
1
|
558
|
1.79
|
| 2J2 |
62
|
1
|
849
|
1.18
|
| 2K1 |
50
|
1
|
703
|
1.42
|
| 2K2 |
61
|
2
|
842
|
2.37
|
| 3A1 |
48
|
2
|
605
|
3.31
|
| 3A4 |
52
|
1
|
711
|
1.41
|
| 3B1 |
110
|
2
|
1364
|
1.47
|
| 3E2 |
49
|
1
|
620
|
1.61
|
| 4A |
45
|
2
|
512
|
3.91
|
| 4C |
46
|
1
|
679
|
1.47
|
| Total |
571
|
14
|
7443
|
| Lion ID | Reason for take | Date Harvested | Sex | Age | Weight (lbs) | County Harvested |
|---|---|---|---|---|---|---|
| F6 |
Legal shooting: Protection of Property
|
7/12/06
|
F
|
1.5-2.0 years
|
66
|
McKenzie
|
| F7 |
Illegal harvest (spotted kitten)
|
9/16/06
|
F
|
4-5 months
|
26
|
McKenzie
|
| F8 |
Legal harvest
|
10/18/06
|
F
|
3-4 years
|
104
|
Bottineau
|
| M9 |
Legal harvest
|
10/28/06
|
M
|
1.5-2.5 years
|
107
|
McLean
|
| F10 |
Legal harvest
|
11/6/06
|
F
|
3 years
|
100
|
Kidder
|
| M11 |
Legal harvest
|
11/9/06
|
M
|
3-4 years
|
110
|
Morton
|
| M13 |
Incidental take
|
1/15/07
|
M
|
4-5 months
|
42
|
McKenzie
|
| M14 |
Incidental take
|
1/30/07
|
M
|
4-5 months
|
48
|
McKenzie
|
| F15 |
Incidental take
|
2/18/07
|
F
|
10+ years
|
80
|
McKenzie
|
| M16 |
Found dead in Lake Sakakawea
|
5/12/07
|
M
|
1-2.5 year old
|
--
|
Montrail
|
| F17 |
Illegal shooting (spotted kitten shot out of season)
|
5/27/07
|
F
|
6-8 months
|
46
|
Dunn/McKenzie County border
|
| M18 |
Legal shooting: Protection of property
|
5/30/07
|
M
|
2.0-2.5 years
|
112
|
Divide
|
| Month/Year |
Meeting Location/Group
|
|---|---|
| March 2006 | ND Game and Fish Department Wildlife Wednesdays, Grand Forks ND Game and Fish Department Wildlife Wednesdays, Bismarck Bottineau County Wildlife Club ND Fur Hunters and Trappers Association Winter Meet, Bismarck Regional Mountain Lion Meeting, Dickinson |
| April 2006 | Western Warden Association, Bowman Annual Wildlife Division Meeting, Bismarck |
| September 2006 | Bismarck Public Employees |
| November 2006 | Finley Wildlife Club |
| December 2006 | ND State Minerals (Oil and Gas) Division, Bismarck Wildlife Club, Napoleon Sertoma Club, Bismarck Century High School Biology Class, Bismarck |
| January 2007 | Men’s church group, Hazen ND Game and Fish Department Volunteer Recognition Banquet, Bismarck Bottineau Sportsmen Club River Keepers, Fargo |
| February 2007 | Rolla Sportsmen Club ND Chapter of the Wildlife Society, Williston Far West Rotary Club, Bismarck Bismarck Sport Show Seminar and Booth KFYR Agri-International Seminar and Booth, Bismarck |
| March 2007 | Lions Club, Mandan Environmental Festival, Bismarck Mandan Ag Day Booth Dickinson Sport Show Booth Soil Conservation District Ladies Ag Banquet, Center MN, ND and SD Tri-state Meeting, Wahpeton Rotary Club, Bismarck Dakota Zoological Society, Bismarck ND Game and Fish Department Wildlife Wednesdays, Bismarck Minot Sport Show ND Game and Fish Department Wildlife Wednesdays, Grand Forks |
| April 2007 | Bismarck Optimist Club Sertoma Club, Minot Century High School Earth Day Lions Club, Bismarck Lions Club, Fargo Barnes County Wildlife Club |
| May 2007 | Soil Conservation District 7th & 8th Grade Day, Dickinson Kiwanis Club, Minot Minot Rotary Club Minot Wildlife Club Zeeland Elementary School Envirothon Coaches, Crystal Springs Red River Area Sportsmen Club, Wahpeton Oak Grove High School |
| June 2007 | Three Affiliated Tribes Tribal Council Meeting, Newtown 4-H Camp, Washburn Saxvik Elementary Camp Adventure, Bismarck ND State Fair Mountain Lion Booth, Minot West Fargo Exchange Club |