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Animals

Southwest Montana's diverse habitats provide a home for a wide range of mammals, birds, reptiles, amphibians, fish, and invertebrates.

Mammals

Iconic species that roam the landscape:

  • Grizzly and black bears - remember these apex predators require proper food and carcass storage.
  • Moose and elk - common in wetlands, forest, and grassland, these large herbivores are often seen at dawn and dusk.
  • Mountain lions and wolves - apex predators that are elusive and are not often seen by people.
  • Bighorn sheep and mountain goats - these animals are adapted to rocky cliffs and alpine terrain.
  • Beavers and otters - essential to wetland health, shaping waterways, and providing habitat to fish and birds.

Birds

Over 200 bird species can be found on the Beaverhead-Deerlodge, from raptors to waterfowl:

  • Golden and bald eagles - majestic raptors that soar above rivers and valleys.
  • Great gray owls and northern goshawks - raptors of the forest.
  • Trumpeter swans, great blue herons and sandhill cranes - iconic wetland birds, often seen in marshy areas, rivers, streams or lakes.
  • Clark's nutcracker and mountain bluebird - found in the montane and alpine forests.

Reptiles and amphibians

Though less common in Montana's cool climate, the region is home to several species:

  • Columbia spotted and boreal chorus frogs - found in wetland areas.
  • Painted turtle - found in slow moving water and ponds.
  • Gartersnakes - the most widespread snake in the region.
  • There is only one poisonous snake in Montana, the prairie rattlesnake.

Fish

Pristine mountain streams and alpine lakes provide habitat for fish:

  • Westslope cutthroat trout - Montana's state fish.
  • Bull trout - a threatened species requiring cold, clean water.
  • Mountain whitefish and Arctic grayling - indicators of aquatic ecosystem health.

Invertebrates

A vast array of insects, spiders, and other invertebrates support the forest's food web. Notable species include: 

  • Pollinators - bees, butterflies, and months essential for plant reproduction.
  • Dragonflies and mayflies - kay indicators of water quality.
  • Western bumblebee - a declining species vital for wildflower pollination.

Last updated March 31st, 2025