Conserving species and Idaho's lifestyle.

Coordinating policies and programs related to the conservation of threatened, endangered and candidate species in Idaho. More about us.

Threatened & Endangered Species

Federal Endangered & Threatened Species in Idaho

  • Endangered - Any species in danger of extinction throughout all or a significant portion of its range.
  • Threatened- Any species likely to be classified as Endangered within the foreseeable future throughout all or a significant portion of its range.






  • MacFarlane's Four O'clock, Mirabilis macfarlanei
  • Spalding's Silene (Spalding's Catchfly), Silene spaldingii
  • Slick Spot Peppergrass, Lepidium papilliferum
  • Ute Ladies' Tresses, Spiranthes diluvialis
  • Water howellia, Howellia aquatilis

Federal Candidate Species in Idaho

  • Candidate - Candidate for proposal


  • Boreal Toad, Anaxyrus boras boreas
  • Columbia Spotted Frog, Rana luteiventris (Great Basin population)
  • Greater sage-grouse, Centrocercus urophasianus
  • North American Wolverine, Gulo gulo luscus
  • Southern Idaho Ground Squirrel, Spermophilus brunneus endemicus
  • Yellow-billed Cuckoo, Coccyzus americanus


  • Christ's Indian Paintbrush, Castilleja christii
  • Goose Creek milkvetch Astragalus anserinus
  • Packard's milkvetch, Astragalus cusickii var. packardiae
  • Whitebark Pine, Pinus albicaulis

304 N. 8th Street, Room 149
Boise, ID 83702
Phone: 208.334.2189
Fax: 208.334.2172
Staff Contacts