The northern extent of this COA includes the Bear Creek Buttes and Rodman Rim area in the Ochoco Mountain foothills. South of US Highway 20, the COA encompasses Pine Mountain and a large area of sagebrush steppe dotted by numerous buttes north of Christmas Valley. Heading east it covers Elk Mountain and Rams Butte before moving north again and crossing US Highway 20 near Hampton. Finally, the COA wraps around Misery Flats, the South Fork Crooked River, and into the eastern edge of Hampton Buttes.
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.
East Cascades
The East Cascade ecoregion extends from the Cascade Mountains' summit east to the warmer, drier high desert and down the length of the state. This ecoregion varies dramatically from its cool, moist border with the West Cascades ecoregion to its dry eastern border, where it meets sagebrush desert landscapes.
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
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 Pika (Modeled Habitat)
Ochotona princeps
American White Pelican (Observed)
Pelecanus erythrorhynchos
Black-necked Stilt (Observed)
Himantopus mexicanus
Western Burrowing Owl (Observed)
Athene cunicularia hypugaea
California Myotis (Observed)
Myotis californicus
Caspian Tern (Observed)
Hydroprogne caspia
Columbia Spotted Frog (Modeled Habitat)
Rana luteiventris
Ferruginous Hawk (Observed)
Buteo regalis
Flammulated Owl (Modeled Habitat)
Psiloscops flammeolus
Fringed Myotis (Observed)
Myotis thysanodes
Greater Sage-Grouse (Observed)
Centrocercus urophasianus
Greater Sandhill Crane (Observed)
Antigone canadensis tabida
Hoary Bat (Observed)
Lasiurus cinereus
Lewis’s Woodpecker (Modeled Habitat)
Melanerpes lewis
Loggerhead Shrike (Modeled Habitat)
Lanius ludovicianus
Long-billed Curlew (Observed)
Numenius americanus
Long-legged Myotis (Observed)
Myotis volans
Mountain Quail (Observed)
Oreortyx pictus
Great Basin Redband Trout (Documented)
Oncorhynchus mykiss newberrii
Pallid Bat (Modeled Habitat)
Antrozous pallidus
Peregrine Falcon (Observed)
Falco peregrinus anatum
Pileated Woodpecker (Modeled Habitat)
Dryocopus pileatus
Pygmy Rabbit (Observed)
Brachylagus idahoensis
Silver-haired Bat (Observed)
Lasionycteris noctivagans
Swainson’s Hawk (Observed)
Buteo swainsoni
Townsend’s Big-eared Bat (Observed)
Corynorhinus townsendii
Western Toad (Modeled Habitat)
Anaxyrus boreas
White-headed Woodpecker (Modeled Habitat)
Dryobates albolarvatus albolarvatus
Willow Flycatcher (Modeled Habitat)
Empidonax traillii