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This seabird, the most abundant in Oregon, has recently suffered severe declines or significant population shift in the eastern North Pacific. Similar in shape to thin, long-winged gulls, sooty shearwaters are dark sooty gray with limited amounts of white on the underwing coverts. They glide on wind currents along wave troughs on stiff wings. Gregarious, they form huge loose flocks in migration, often passing for hours within site of land-based observers. In Oregon, it is an abundant summer visitor and transient offshore on the inner shelf and is most numerous three to six miles offshore. Hear the call of the…

During the breeding season, this gray-hooded warbler is conspicuous, singing boldly from riparian thickets, clear-cuts, and roadside brush. However, when household cares occupy the daylight hours, they become elusive as field mice, slipping about through the thickets like shadows, only the sharp alarm note betraying their presence to an intruder. After many minutes of careful pursuit, an observer is often left with only a brief glimpse of an olive-colored back or a broken white eye-ring. MacGillivray's warbler is one species that appears to thrive in areas that have been disturbed by industrial forest practices. It has been reported from every…

A thick body, small head and coloration similar to a killer whale make this dolphin easy to recognize. Dall’s porpoise is mostly black with a large white patch on the belly and flanks. The small dorsal fin is partly white and the trailing edges of the tail are frosted white. About seven feet long and weighing around 400 pounds, Dall’s live only in the north Pacific. Dall’s are the fastest of all small cetaceans and can swim at up to 35 miles per hour, almost as fast as a killer whale. When swimming at the surface they create a characteristic…

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…

The Piute ground squirrel is the other of the two small gray ground squirrels without stripes or spots. In Oregon, it occurs south of Sheepshead and Cedar mountains in Malheur County. It is a species of the High Desert and commonly occurs in habitats in which the dominant shrub is big sagebrush, saltbush, or greasewood. It is commonly associated with rocky outcrops, levees, railroad embankments, ditchbanks, and sand dunes. Some occur in fencerows and edges of alfalfa and small-grain fields. These ground squirrels are usually active for three to five months each year. They emerge from their hibernacula in February…

The Ord's kangaroo rat is a medium-sized kangaroo rat with awl-shaped lower incisors. It is the lightest-colored kangaroo rat in Oregon; overall the dorsum is a rich buff with gray overtones. The venter, upper lip, feet and side of the tail are white; there is a white spot above each eye and behind each ear; and a white stripe crosses each thigh. The moustache, eyelids, and ears are blackish. In Oregon, it occurs east of a line connecting The Dalles, Hood River County; Sisters, Deschutes County; and Lakeview, Lake County except in the Ochoco, Blue, and Wallowa mountains. Although occasionally…

The Northern fur seal is the smallest member of the family in Oregon. The flippers are nearly twice as large as those of a comparably-sized individual of any other species of otariid. The ears are cylindrical and the auditory meatus is covered with wax to prevent entry of water. The pelage consists of coarse guard hairs and an exceedingly thick underfur that serves as waterproof insulation. Adult males are dark gray or brown dorsally and reddish brown ventrally; a grayish cape covers the neck and shoulders. Adult females are grayish brown dorsally and reddish brown ventrally. The Northern fur seal…

The Long-tailed weasel is the larger of the two weasels in Oregon, but smaller than the other member of the genus, the mink. Males are considerably larger than females. The head is flattened and somewhat triangular; the body and neck are elongate and almost cylindrical; the legs are short, and the tail is long. The summer pelage is brown dorsally; the venter is yellowish to orangish except for a white chin and sometimes one or more scattered brown spots. The tip of the tail is black. The pelage is molted twice annually. In the Cascade Range and eastward through the…

The Yellow rail is a small, secretive rail that is seen and heard far less than any other rail in Oregon. Males vocalize during the breeding season with a five-note tic-tic, tic-tic-tic repeated incessantly during hours of dark, and call infrequently during the day. The call sounds much like two small rocks being tapped together. Yellow rails are quite small and have a white patch on the trailing edge of the inner wing, more extensive than that on juvenile Soras. Males in the breeding season have a distinct yellow bill and are slightly larger but otherwise sexes are alike. Chicks…

Features: Blue grouse are large in comparison to most other grouse species. The females are mottled brown, tan, and gray. The males are similar, but with solid blue-gray on the underside and bright orange-yellow combs over the eyes. Habitat: Blue grouse occupy the coniferous forests of western Oregon, the eastern slopes of the Cascades, the Blue Mountains of northeastern Oregon, and the Klamath Basin and south Warner Mountains. Preferred habitat includes timber edges, open timbered slopes, mountain meadows adjacent to springs or other sources of water, and near berry producing areas such as chokecherry thickets. Technique: Effective hunting techniques involve…

The American badger is a medium-sized, powerfully built carnivore strongly adapted for digging. The body is flattened and the legs are short but stout; the toes of the forefeet are partly webbed and equipped with long, curved claws; the hind feet are shaped like miniature shovels; and each eye is equipped with a membrane that can be extended to cover it. The ears are rounded and densely covered with fur but seem large in comparison with those of many digging mammals. The tail is short and brushlike. Dorsally, the long, shaggy pelage is mottled grayish blending on the venter to…