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Montana Fish, Wildlife & Parks
Montana Fish, Wildlife & Parks
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Species of Montana

Amphibians are ectothermic vertebrate animals that live on both land and in water, lack scales, and produce external gelatinous eggs requiring moist conditions. Montana is home to breeding populations of almost 15 amphibian species.

Birds are endothermic vertebrate animals that possess feathers and produce external eggs. Montana is home to breeding populations of over 250 bird species. In addition, over 170 bird species visit our state during their spring and fall migration journeys.

Fish are aquatic, ectothermic animals with backbones and have fins and gills throughout life. Montana is home to breeding populations of over 85 fish species.

Invertebrates are animal species without backbones. Montana is home to breeding populations of almost 150 invertebrates, including over 120 mollusk species and over 20 crustaceans.

Mammals are endothermic vertebrate animals that possess hair and mammary glands for the production of milk for feeding offspring. Montana is home to breeding populations of over 110 mammal species.

Reptiles are ectothermic vertebrate animals that possess scales and produce external amniotic eggs with membrane and yolk sac. 17 native reptile species have been confirmed as being present in Montana.

Wild Things feature header. Photo of White-tailed Deer © 2005 Craig Hergert

Highlighted Species - Northern Bog Lemming

Synaptomys borealis

Northern Bog Lemming

Northern Bog Lemming - Synaptomys borealis

The northern bog lemming has a grizzled reddish-brown coat on the back that grades to gray on the belly; the coat is relatively long and loose. The ears extend noticeably beyond the body fur and are sparsely haired on the edge. The tail is extremely short. There are 16 teeth in the skull (dental formula: I 1/1, C 0/0, P 0/0, M 3/3), with the upper incisors broadly grooved. Body measurements are: total length 120 millimeters, tail 21 to 23 millimeters, hind foot 18 to 19 millimeters, and mass 22 to 25 grams (Foresman 2001a).

Visit the Montana Animal Field Guide for more information on the Northern Bog Lemming

Conserving Westslopes on the East Slope

The bright morning sun filtering through ponderosa pines sparkles off the riffles of Muskrat Creek as the stream twists down from the Elkhorn Mountains. Two Montana Fish, Wildlife & Parks fisheries biologists, Lee Nelson and Dave Moser, watch a survey crew work a creek segment with an electric probe, nets, and bucket. Each burst of electricity from the probe temporarily stuns trout, causing them to float to the surface. [Full Story]

That Critter’s Got To Go

Montanans love wildlife. But it’s one thing to marvel at a mountain goat in Glacier National Park or watch a mule deer trotting across the prairie. It’s another to have a striped skunk camping in your kitchen or a big brown bat fluttering across the bedroom. [Full Story]

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