Natural History Calendar

Mammals

Coyote in badlands

Coyote

Coyote pups are born.

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(Early March through Late May)

Bobcat cub in tree

Bobcat

Bobcat born.

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(Late March through Mid-May)

Coyote Pup at Den Entrance

Coyote

Coyote pups are emerging from dens.

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(Early April through Early June)

Young bison beside mom

Bison

Bison calves born (~45 lbs at birth).

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(Mid-April through Late May)

Mink on rock with green grass behind

Mink

Mink breeding season.

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(Mid-April through Late May)

Young raccoon looking out of tree hole

Raccoon

Raccoon young are born.

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(Mid-April through Late May)

2 young ewes tussling

Bighorn Sheep

Bighorn sheep lambs born (~8-10 lbs at birth).

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(Late April through Early June)

Two young skunks on a log

Striped Skunk

Striped skunks born.

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(Early May through Early June)

Young moose

Moose

Moose calves born (~32 lbs at birth).

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(Mid-May through Mid-June)

Young beaver

Beaver

Beaver young are born.

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(Late May through Late July)

Young elk with 2 females

Elk

Elk calves born (~37 lbs at birth).

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(Late May through Early June)

Mule deer fawn

Mule Deer

Mull deer fawns born.

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(Late May through Late June)

Pronghorn fawn running

Pronghorn

Pronghorn fawns born (~8 lbs at birth).

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(Late May through Late June)

Red fox pups at den

Red Fox

Red fox families communicate by "screaming".

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(Late May through Late June)

White-tailed fawn in tall grass

White-Tailed Deer

White-tailed fawns born (~7 lbs at birth)..

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(Late May through Late June)

Birds

Canada geese standing in grass

Canada Geese

Canada geese spring migration.

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(Mid-March through Mid-May)

Three male and one female red heads flying

Ducks

Duck spring migration.

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(Mid-March through Mid-May)

Sage grouse male displaying

Sage Grouse

Sage grouse breeding season (peaks in late April).

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(Mid-March through Mid-May)

Sharptails on a lek

Sharp-Tailed Grouse

Sharp-tailed grouse breeding season (peaks in mid-April).

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(Mid-March through Mid-May)

Two male pheasants fighting

Ring-Necked Pheasant

Ring-necked pheasants males are crowing.

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(Early April through Early June)

Ruffed Grouse Drumming

Ruffed Grouse

Ruffed grouse are drumming.

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(Early April through Late May)

Male turkey displaying

Wild Turkey

Wild turkey breeding season.

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(Mid-April through Late May)

American bittern walking through dry reeds

American Bittern

American bittern return to North Dakota from their wintering grounds.

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(Mid-April through Mid-May)

Long-billed curlew in field

Long-Billed Curlew

Long-billed curlews lay eggs.

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(Early May)

Sedge wren clinging to reeds

Sedge Wren

Sedge wrens return from their wintering grounds.

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(Early May)

Sharptail in brown grass

Sharp-Tailed Grouse

Sharp-tailed grouse nesting season.

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(Early May through Early August)

Meadowlark singing on bush

Western Meadowlark

Western meadowlarks laying eggs.

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(Early May through Late June)

Pheasant chick in grass

Ring-Necked Pheasant

Ring-necked pheasants are nesting.

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(Mid-May through Mid-July)

Wild turkey in grass and flowers

Wild Turkey

Wild turkey are nesting.

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(Mid-May through Late July)

Gray partridge flying

Gray Partridge

Gray partridge nesting season.

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(Late May through Mid-August)

Long-billed curlew in field

Long-Billed Curlew

Long-billed curlew eggs hatch.

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(Late May through Early June)

Female snowy owl flying over snow

Snowy Owl

Snowy owls may be found overwintering in the state.

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(Late October through Early May)

Fish

Bluegill held by biologist

Bluegill

Bluegill spawn late May and June when water temps near 22 C (71.6F). Large males build nests in colonies where they spawn and protect eggs. Some smaller males mimic females to fertilize eggs instead of nest building.

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(Late May through June)

Insects

Monarch butterfly on milkweed flower

Monarch Butterfly

Monarch butterflies reach North Dakota.

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(Late May)