Natural History Calendar
Spring
March
Snow geese are in the midst of spring migration, black bears begin emerging from hibernation...
April
Crocus begin blooming on the prairie, coyote pups begin emerging from their dens...
May
Monarchs reach the state, duck migration is completing...
Summer
June
White-tailed fawns are being born, American marten breeding season begins...
July
Bison rut intensifies from late July into August, long-tailed weasel breeding season begins...
August
Big brown bats begin dispersal from summer roosts, white-tailed fawn wean...
Fall
September
Canada geese begin their southern migration, coyote juveniles begin dispersing...
October
Snowy owls may begin moving into the state for the winter, black bears are hyperphagic...
November
Striped skunks begin to form communal dens...
Winter
December
Bighorn sheep breeding wanes...
January
Wood frogs are hibernating forzen almost solid and without a heartbeat, coyote howling peaks...
February
Great horned owls begin nesting, raccoon breeding season begins...