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The hoary bat has a wingspan of nearly 16 inches. It has dark fur tipped with white, a dark mask on its face, a yellow-orange throat and round ears edged in black. This bat roosts in branches of trees and likes to feed around outdoor lights. Hoary bats migrate south in winter, returning to Oregon in the spring. This bat usually bears twins. Hoary bats are found at scattered localities over most of the region west of the Cascade Range and in montane regions east of the Cascade Range. They are an Oregon Conservation Strategy Species in all ecoregions except
This bat, found in older forests, has a wingspan of about 10 inches. Its fur is glossy black, tipped with white. It forages over ponds, streams, meadows and roads, often flying very low and roosting behind loose tree bark. Maternity roosts of the silver-haired bat are found in trees. This bat usually bears twins. The silver-haired bat occurs statewide in Oregon except for most of the Columbia Basin and is an Oregon Conservation Strategy Species in all ecoregions except the Nearshore ecoregion. It is primarily associated with coniferous forests, including the juniper woodlands in the southeastern portion of the state
The canyon bat weighs less than one quarter of an ounce! Its fur is pale yellow to brownish gray with a dark face mask. It lives in eastern Oregon, likes rocky canyons and outcrops and flies early in the evening when it feeds on swarms of flying insects. Photo by ©Michael Durham
The big brown bat is a relatively large bat with a wingspan of 13 to 14 inches. Its dark color and slow flight help with identification. They are more likely to be active in cold weather than other bats and prefer human structures for roosting. The big brown bat occurs throughout the state. In eastern Oregon it forages over the forest canopy, along roads through the trees, along the forest edge, over forest clearings, and along cliffs and canyon streams. In western Oregon, the species is usually associated with coniferous and deciduous forests. Photo by ©Michael Durham
Spotted bats are rare in North America, living in dry climates and often roosting on high cliffs. They are white underneath with dark fur on their back and with large white spots. The spotted bat is found in eastern Oregon and is an Oregon Conservation Strategy Species in the Blue Mountains, Columbia Plateau, East Cascades, Klamath Mountains and Northern Basin and Range ecoregions. Photo by ©Michael Durham
This is a medium-sized bat with large, long ears. It is gray, brown, or black and generally active only after full darkness. Townsend's big-eared bat is very vulnerable to human disturbance, and its numbers are declining. In Oregon, it is classified as a State Sensitive Species. It's also an Oregon Conservation Strategy Species in all ecoregions except Nearshore. Never disturb this bat if you are in a cave. Photo by ©Michael Durham
This is a large, pale bat with huge ears, large eyes and a dog-like face. Its wing beat is slower than most bats. It emerges late at night to feed primarily on the ground, eating large beetles, crickets, and even scorpions. Pallid bats can walk on the ground and are immune to a scorpion’s sting. The pallid bat is uncommon and is found mostly in arid regions in canyons in southwestern and eastern Oregon. It's an Oregon Conservation Strategy Species in the Blue Mountains, Columbia Plateau, East Cascades, Klamath Mountains, and Northern Basin and Range ecoregions. Photo by ©Michael Durham
The Brazilian free-tailed bat is a fast-flying, medium-small bat with long narrow wings and a tail. It survives the cold winters in Oregon by staying in heated buildings instead of hibernating or migrating, often sharing these quarters with other bat species. Roseburg may be the most northern part of this bat’s range. Photo by ©Michael Durham
This group of mammals is spread nearly worldwide and in Oregon, they are found throughout the state. Oregon is home to the American pika and seven species of rabbits and hares.
The rat-sized American pika is characterized by rounded ears, no external tail, bare planter pads, and hind feed scarcely longer than the front feet. The pika requires talus, creviced rock, and other high elevation microhabitats that provide cool microclimates. Adequate forage close to rocky crevices is needed. In Oregon, the species is limited to suitable habitats in the Cascade Range and the Wallowa, Blue, Strawberry, Steens, Hart, and Warner mountains, and at Newberry Crater in Deschutes County and Grizzly and Cougar peaks in western Lake County. The American pika is an Oregon Conservation Strategy Species and is limited by its
The ears of the pygmy rabbit are short, rounded, and covered with long silky hairs inside and out; the tail is small and covered with hairs possessing wide buffy bands with narrow blackish tips above and below; and the feet are short, densely furred below, and colored a light orangy-buff. In Oregon, pygmy rabbits have been found east and south of a line connecting Klamath Falls, Fremont, Redmond, and Baker City. This rabbit is closely tied to habitats dominated by big sagebrush. The Pygmy rabbit is an Oregon Conservation Strategy Species in the Northern Basin and Range ecoregion. Photo from
The brush rabbit rarely ventures more than a few meters from the extremely dense brush that constitutes the requisite component of their habitat. Runways are interlaced through brushy clumps into surrounding grassy areas and are kept clear of vegetation for easy and quick access to and from foraging areas. In Oregon, the brush rabbit occurs in the Willamette Valley and other interior valleys, in coastal areas, and in valleys along coastal streams from the Columbia River south, and from the foothills of the Cascade Range west. Photo by ©Keith Kohl, ODFW
The eastern cottontail is the largest member of the genus in Oregon. Overall, the dorsal pelage is brownish, becoming darker (almost black) on the rump and lighter buffy brown on the flanks; the nape patch is orangy brown without black hairs, and the head is the same color as the dorsum. The hairs on the dorsum have steel gray bases followed by bands of brownish black, buff, and black. The venter hairs are white with gray bases, giving a splotched appearance when the hairs are spread, and the tail hairs are white to the base. This rabbit was introduced into
The mountain cottontail is intermediate in size and light grayish-brown in color. Its tail is white and ears relatively broad and rounded. It is usually associated with rocky outcrops with nearby dominant vegetation consisting of big sagebrush, bitter-brush, rabbit-brush, western juniper and mountain-mahogany. In Oregon, it occurs throughout the state east of the Cascade Range with a western extension into Josephine County. Photo by ©Keith Kohl, ODFW
The snowshoe hare is the smallest member of the genus in Oregon. Individuals in populations east of the Cascade Range, and some individuals in the Cascade Range, become white in winter and are brown in summer. This hare is associated with dense thickets of young conifers, especially those with lower branches touching the ground and especially firs and western larch interspersed with small clearings vegetated by grasses and forbs. Photo from ODFW
The black-tailed jackrabbit is slightly smaller than the white-tailed jackrabbit but considerably larger than the snowshoe hare. In conformation, it is much like the white-tailed jackrabbit. West of the Cascade Range, the dorsal hairs of this rabbit have gray blending to dark-brown or blackish base followed by a narrow band of buff and a black tip. Hairs on the throat, sides, and rump have gray bases blending to buff with short black tips. On the venter, hairs are white with light pinkish-buff tips. The tail is black on the dorsum and dark buff on the venter. The ears are dark
Summer and winter pelages of white-tailed jackrabbit are drastically different. In summer, the overall appearance is grizzled dark grayish with overtones of pinkish buff, blending lighter on the sides. In winter, it is the color of dirty snow, shading lighter on the sides. In Oregon, the white-tailed jackrabbit occurs east and south of a line connecting Rufus, Maupin and Antelope, John Day, Juntura, Fields, Fort Rock, and Fort Klamath and Klamath Falls. It is associated with bunchgrass habitats. The white-tailed jackrabbit is an Oregon Conservation Strategy Species in the Northern Basin and Range ecoregion. Photo by Wickipedia
The mountain beaver is a medium-sized, muskrat-like rodent often lacking a visible tail. It is not related to other beavers or rodents but are called beavers because of their habit of gnawing down young trees. The mountain beaver has an extremely short, fur-covered tail, and otherwise differs from the muskrat by possessing five-toed feet. It is dark brown with a small white spot at the base of each ear. In Oregon, are common in forested areas on the west slope of the Cascade Range west to the Pacific Ocean. They are, however, rarely seen as they spend most of their
The yellow-pine chipmunk is one of the smallest in Oregon, only slightly larger than the least chipmunk. Its face is marked with a dark stripe, followed laterally by two alternate light and dark stripes. The outermost light strip is nearly white. It occurs on the east slope of the Western Cascades and eastward through most of the remainder of Oregon, except it is absent from most of the Columbia Basin and much of southern Harney, eastern Malheur, and southern Baker counties. Its range also extends westward in the Siskiyou Mountains in southern Jackson and Josephine counties. Ponderosa pine seems to
The least chipmunk is the smallest chipmunk in Oregon, but it is only slightly smaller than the yellow-pine chipmunk. As in all chipmunks, the face is marked with a dark stripe through the eye bordered on each side with a light- and a dark-colored stripe. The middorsum is marked with a dark-colored stripe followed on each side by two alternating light- and dark-colored stripes. The least chipmunk has the largest geographic range of any chipmunk. In Oregon, it occurs east of the Cascade Range except in the Columbia Basin and most of the Blue Mountains. In general, it is a
