Photo: Roy W. Lowe / USFWS — Public Domain
Looking for animals Colorado has lost? See Lost & Extinct →
Endangered Species in Colorado
A reference to the 60 threatened, endangered and other at-risk animals documented in Colorado
From the black-footed ferret on the eastern plains to the Uncompahgre fritillary butterfly clinging to a few alpine acres in the San Juans.
Looking for plants? Colorado's federally listed plants have their own section.
Prefer paper? Get the free 2026 guide (PDF).
Showing all 60 listed & at-risk and 19 native & rare species
See the Reintroduced Species guide →Threatened & Endangered (60)
Photo: indianaspeciesfishing / iNaturalist — CC BY-NC 4.0
Photo: Todd Harless / USFWS — Public Domain
Photo: Ryan Hagerty / USFWS — Public Domain
Reintroduced
Featured
Photo: Kayt Jonsson / USFWS — Public Domain
Photo: USFWS — Public Domain
Featured
Photo: Dana Shellhorn / USFWS — Public Domain
Photo: Gojilynx / iNaturalist — CC BY 4.0
Photo: Rod Colvin / USFWS — Public Domain
Photo: Ryan Pennesi / U.S. Forest Service — Public Domain
Reintroduced 
Photo: Joe Ferreira / USFWS — Public Domain
Photo: Cody Stricker / iNaturalist — CC BY 4.0
Photo: Henry Dennison / iNaturalist — CC BY-NC 4.0
Photo: Robert Dobbs / iNaturalist — CC BY-NC 4.0
Photo: Jarrett Woodrow / USFWS — Public Domain
Photo: Brett Billings / USFWS — Public Domain
Photo: Lori Iverson / USFWS — Public Domain
Reintroduced 
Photo: Tom Koerner / USFWS — Public Domain
Photo: Kate Miyamoto / USFWS — Public Domain
Photo: Chris Kennedy / USFWS — Public Domain
Photo: Gary Kramer / USFWS — Public Domain
Photo: Grand Canyon National Park / NPS — Public Domain
Photo: Matt D'Agrosa / iNaturalist — CC BY 4.0
Photo: Michael Verdirame / iNaturalist — CC BY-NC 4.0
Photo: Laurie Sheppard / USFWS — Public Domain
Photo: Patricia Zenone / USFWS — Public Domain
Photo: Lon Brehmer / iNaturalist — CC BY 4.0
Photo: Shaula Hedwall / USFWS — Public Domain
Photo: Jim Hudgins / USFWS — Public Domain
Photo: Derek Freed / iNaturalist — CC BY-NC 4.0
Photo: USFWS — Public Domain
Photo: Terry Ireland / USFWS — Public Domain
Silverspot Butterfly (Nokomis Fritillary)
Speyeria nokomis nokomis
invertebrate Wet Mountain Meadows
Photo: Blue Mountains – Oregon Conservation Strategy — Public Domain
Return Planned 
Photo: Sam Stukel / USFWS — Public Domain
Photo: Carter Dorscht / iNaturalist — CC0
Photo: Joshua Smith / iNaturalist — CC0
Photo: Sam Stukel / USFWS — Public Domain
Connected by Water 
Photo: USDA Forest Service — Public Domain
Photo: USFWS — Public Domain
Photo: Tom Kennedy / iNaturalist — CC BY 4.0
Photo: Rick Bohn / USFWS — Public Domain
Plains Sharp-tailed Grouse
Tympanuchus phasianellus jamesi
bird Conservation Reserve Program Grasslands
Photo: Robert Schorr / Colorado Natural Heritage Program — Public Domain
Featured
Photo: Sam Stukel / USFWS — Public Domain
Photo: Jill Haukos / Konza Prairie Biological Station — CC BY 4.0
Photo: Chris Kitcheyan / USFWS — Public Domain
Photo: Pam Sponholtz / USFWS — Public Domain
Photo: Tom Koerner / USFWS — Public Domain
Reintroduced 
Photo: Conway Hawn / iNaturalist — CC0
Photo: Dave Menke / USFWS — Public Domain
Photo: ccarrollc1 / iNaturalist — CC BY-NC 4.0
Photo: Kendra Parrish / iNaturalist — CC0
Photo: Craig Miller / Bureau of Land Management — Public Domain
Photo: Steve Hillebrand / USFWS — Public Domain
Photo: NPS — Public Domain
Photo: Pete Pattavina / USFWS — Public Domain
Photo: AndreaNwilliams / Wikimedia Commons — CC BY-SA 4.0
Photo: Allison Clark / iNaturalist — CC0
Photo: Steve Hillebrand / USFWS — Public Domain
Rare Visitor 
Photo: Yianni Laskaris / USFWS — Public Domain
Photo: Peter Pearsall / USFWS — Public Domain
Native & Rare (19)
Photo: Joshua Smith / iNaturalist — CC0
Photo: National Park Service, Glacier National Park — Public Domain
Photo: esuchman / iNaturalist — CC0
Photo: Jacob W. Frank / National Park Service — Public Domain
Photo: Alan Schmierer — CC0
Photo: Jeremiah / iNaturalist — CC BY-NC 4.0
Photo: Peter DeGennaro / iNaturalist — CC BY-NC 4.0
Photo: Ryan Hagerty / U.S. Fish and Wildlife Service — Public Domain
Photo: Jared Shorma / iNaturalist — CC BY 4.0
Native · SGCN Tier 2 S1
Great Sand Dunes Tiger Beetle
Cicindela theatina
invertebrate Sparsely Vegetated Sand Dunes
Photo: USDA Natural Resources Conservation Service — Public Domain
Photo: Dave Menke / USFWS — Public Domain
Photo: Joshua Smith / iNaturalist — CC0
Photo: Christian Nunes / iNaturalist — CC BY-NC 4.0
Photo: Jim Hudgins / USFWS — Public Domain
Photo: National Park Service, Rocky Mountain National Park — Public Domain
Native · SGCN Tier 2 S4
Rocky Mountain Bighorn Sheep
Ovis canadensis canadensis
mammal Steep, Rocky Mountain Terrain
Photo: Jim Peaco / National Park Service — Public Domain
Photo: Jim Peaco / National Park Service — Public Domain
Photo: Joshua Smith / iNaturalist — CC0
Photo: Rosa Prasser / NPS — Public Domain
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