Sensitive Species


Steelhead Trout

Steelhead trout are the sea-run form of rainbow trout. Steelhead and rainbow trout are both born in fast-flowing, oxygen-rich rivers and streams. Rainbow trout stay in fresh water all of their lives, while steelhead migrate to the ocean and develop a more silvery color, and typically grow much larger than their freshwater-dwelling counterparts.   These unique fish are usually a dark olive color, with shading that is silvery-white on their undersides and heavily speckled bodies. They also have a pink to red stripe that runs along their sides. Steelhead migrate back to the freshwater rivers and streams of their birth to mate. Unlike other anadromous Pacific salmonids, they can spawn more than one time. Steelhead can live to be up to 11 years.    

Habitat: These diverse fish spend their younger days in freshwater streams and rivers. Young steelhead may spend up to seven years in freshwater before migrating to the ocean to feed and mature. There, they remain for up to three years before returning to freshwater to spawn. Some of these fish return to freshwater after their first season in the ocean, but instead of spawning, they return to the sea after one season in freshwater. 

Food: Young steelhead love to eat zooplankton, which are tiny marine animals. Once they become adults, steelhead feed on aquatic and terrestrial (land-dwelling) insects, crustaceans, mollusks, minnows, fish eggs, and small fishes. 

Facts: Steelhead are endangered due to human alteration of their habitat. Dams along rivers and streams have disrupted their migration, along with pollution and development. Scientists and public land managers are working to protect these unique and wonderful fish. Conservation efforts are currently underway, including hatcheries, removal and modification of dams that obstruct migration, habitat restoration and improved water quality.  


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Herbivore Mammals

Pygmy rabbit 
Desert cottontail 
Eastern gray squirrel 
Red squirrel 
Deer mouse
Kangaroo rat 
Meadow vole 
Mule deer 
Bighorn sheep 
American pronghorn 

Carnivore Mammals

American badger 
River otter 
Red fox 
Long-tailed weasel 
Grizzly bear 
Mountain lion   



  Long-toed salamander 
  Idaho giant salamander  
  Coeur d'Alene salamander

 Frogs and Toads  

  American bullfrog 
  Columbia spotted frog 
  Western toad 
  Northern leopard frog 
  Pacific tree frog 
  Great Basin spadefoot 



Painted turtle 
Northern alligator lizard 
Mohave black-collared lizard 
Short-horned lizard 
Desert horned lizard 
Sagebrush lizard 
Western fence lizard 
Western skink 
Side-blotched lizard 
Longnosed leopard lizard 
Western whiptail 



Western pipistrelle 
Western small-footed myotis 
Little brown bat 
Yuma myotis 
Townsend's big-eared bat 
Hoary bat 
Silver-haired bat 
Fringed myotis 
Pallid bat

Sensitive Species (not a complete list) 

Greater sage-grouse 
Pygmy rabbit 
No. Idaho ground squirrel 
So. Idaho ground squirrel
Canada lynx 
Grizzly bear 
Selkirk Mtns. woodland caribou 
Kootenai White River sturgeon 
Bull trout 
Sockeye salmon 
Chinook salmon 
Steelhead trout 
Yellow-billed cuckoo