Geographic boundaries of the COAs were updated for the 2026 State Wildlife Action Plan and the associated COA profiles are intended to provide additional information. Content of each COA profile is being refined and will be updated to reflect current conditions when feasible. Please help us by submitting information on Local Conservation Actions, Plans, or Potential Partners to: OCS.revision@odfw.oregon.gov.
The Malheur River Headwaters COA spans two ecoregions. Within the BM ecoregion, the COA includes Logan Valley and part of the Strawberry Mountain Wilderness and continues south to Battle Mountain (just north of Highway 306). Within the NBR, the COA is comprised of land associated with the Malheur River south of Battle Mountain to approximately one mile above the Warm Springs Reservoir. From west to east the COA includes the northern half of the Stinkingwater Mountains to Carey Tables east of the Malheur River.
Ecoregions
Blue Mountains
Located in NE Oregon, the Blue Mountains ecoregion is the largest ecoregion in the state. It provides a diverse complex of mountain ranges, valleys, and plateaus that extend beyond Oregon into the states of Idaho and Washington.
Northern Basin and Range
The Northern Basin and Range ecoregion covers the very large southeastern portion of the state, from Burns south to the Nevada border and from the Christmas Valley east to Idaho. It is largely a high elevation desert-like area dominated by sagebrush communities and habitats.
Key Habitats
Grasslands
Grasslands include a variety of upland grass-dominated habitats, such as upland prairies, coastal bluffs, and montane grasslands.
Late Successional Mixed Conifer Forests
Late successional mixed conifer forests provide a multi-layered tree canopy, including large-diameter trees, shade-tolerant tree species in the understory, and a high volume of dead wood, such as snags and logs.
Natural Lakes
Natural lakes are relatively large bodies of freshwater surrounded by land that were formed through geological processes, such as glacial scouring, tectonic movements, volcanic activity and river meander cutoffs. In Oregon, natural lakes are defined as standing water bodies larger than 20 acres, including some seasonal lakes. Depth is not a reference for characterization of …
Ponderosa Pine Woodlands
Ponderosa pine woodlands are common in Oregon’s eastside ecoregions. While dominated by ponderosa pine, these woodlands may also have lodgepole pine, western juniper, aspen, western larch, grand fir, Douglas-fir, mountain mahogany, incense cedar, sugar pine, or white fir, depending on ecoregion and site conditions. Known for their open forest structure, these woodlands generally have fewer …
Flowing Water and Riparian Habitats
Flowing Water and Riparian Habitats include all naturally occurring flowing freshwater streams and rivers throughout Oregon as well as the adjacent riparian habitat.
Sagebrush Habitats
Sagebrush habitats include all sagebrush steppe- and shrubland-dominated communities found east of the Cascade Mountains.
Species of Greatest Conservation Need
American Avocet (Observed and Modeled)
Recurvirostra americana
American Goshawk (Observed and Modeled)
Astur atricapillus
American Pika (Modeled)
Ochotona princeps
American White Pelican (Observed and Modeled)
Pelecanus erythrorhynchos
Black-backed Woodpecker (Observed and Modeled)
Picoides arcticus
Black Rosy-finch (Modeled)
Leucosticte atrata
Black Tern (Observed and Modeled)
Chlidonias niger
Bobolink (Observed and Modeled)
Dolichonyx oryzivorus
Brewer’s Sparrow (Observed and Modeled)
Spizella breweri breweri
California Myotis (Observed and Modeled)
Myotis californicus
Canyon Bat (Observed and Modeled)
Parastrellus hesperus
Caspian Tern (Observed and Modeled)
Hydroprogne caspia
Chipping Sparrow (Observed and Modeled)
Spizella passerina
Columbia Spotted Frog (Observed and Modeled)
Rana luteiventris
Common Nighthawk (Observed and Modeled)
Chordeiles minor
Cusick’s lupine (Observed)
Lupinus lepidus var. cusickii
Desert Horned Lizard (Modeled)
Phrynosoma platyrhinos
Ferruginous Hawk (Observed and Modeled)
Buteo regalis
Flammulated Owl (Observed and Modeled)
Psiloscops flammeolus
Franklin’s Gull (Observed)
Leucophaeus pipixcan
Fringed Myotis (Observed and Modeled)
Myotis thysanodes
Golden Eagle (Observed and Modeled)
Aquila chrysaetos
Gray Wolf (Observed)
Canis lupus
Great Gray Owl (Observed)
Strix nebulosa
Greater Sage-Grouse (Observed and Modeled)
Centrocercus urophasianus
Greater Sandhill Crane (Observed)
Antigone canadensis tabida
Hoary Bat (Observed and Modeled)
Lasiurus cinereus
Lewis’s Woodpecker (Observed and Modeled)
Melanerpes lewis
Little Brown Myotis (Observed and Modeled)
Myotis lucifugus
Loggerhead Shrike (Observed and Modeled)
Lanius ludovicianus
Long-billed Curlew (Observed and Modeled)
Numenius americanus
Long-legged Myotis (Observed and Modeled)
Myotis volans
Long-nosed Leopard Lizard (Modeled)
Gambelia wislizeni
North American Porcupine (Modeled)
Erethizon dorsatum
Olive-sided Flycatcher (Observed and Modeled)
Contopus cooperi
Pacific Marten (Modeled)
Martes caurina
Pallid Bat (Modeled)
Antrozous pallidus
Pygmy Rabbit (Observed and Modeled)
Brachylagus idahoensis
Sagebrush Sparrow (Observed)
Artemisiospiza nevadensis
Short-eared Owl (Modeled)
Asio flammeus flammeus
Silver-haired Bat (Observed and Modeled)
Lasionycteris noctivagans
Snowy Egret (Modeled)
Egretta thula brewsteri
Spotted Bat (Modeled)
Euderma maculatum
Swainson’s Hawk (Observed and Modeled)
Buteo swainsoni
Townsend’s Big-eared Bat (Modeled)
Corynorhinus townsendii
Trumpeter Swan (Observed and Modeled)
Cygnus buccinator
Western Bluebird (Observed and Modeled)
Sialia mexicana occidentalis
Western Bumble Bee (Observed)
Bombus occidentalis
Western Burrowing Owl (Observed and Modeled)
Athene cunicularia hypugaea
Western Grebe (Observed and Modeled)
Aechmophorus occidentalis
Western Long-eared Myotis (Observed and Modeled)
Myotis evotis
Western Meadowlark (Observed and Modeled)
Sturnella neglecta
Western Pearlshell Mussel (Observed)
Margaritifera falcata
Western Rattlesnake (Modeled)
Crotalus oreganus oreganus
Western Ridged Mussel (Observed)
Gonidea angulata
Western Small-footed Myotis (Modeled)
Myotis ciliolabrum
Western Snowy Plover (Modeled)
Anarhynchus nivosus nivosus
Western Toad (Modeled)
Anaxyrus boreas
White-breasted Nuthatch (Pacific) (Modeled)
Sitta carolinensis aculeata
White-headed Woodpecker (Observed and Modeled)
Dryobates albolarvatus albolarvatus
White-tailed Jackrabbit (Modeled)
Lepus townsendii
Willet (Observed and Modeled)
Tringa semipalmata inornata
Willow Flycatcher (Observed and Modeled)
Empidonax traillii
Wilson’s Phalarope (Observed and Modeled)
Phalaropus tricolor
Wolverine (Observed and Modeled)
Gulo gulo
Yuma Myotis (Observed and Modeled)
Myotis yumanensis