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SALEM, Ore.— White-nose syndrome (WNS) in bats has been detected for the first time in Oregon in Columbia and Benton counties. White-nose syndrome is caused by an infection with the fungus Pseudogymnoascus destructans that disrupts hibernation, causing early winter emergence, dehydration and starvation. This finding follows the 2025 detection of…
The black rat is slightly smaller than the Norway rat, but much larger than the house mouse, the only other members of the subfamily in Oregon. The black rat is similar to other members of the subfamily in that it possesses a scaly, scantily haired tail; membranous, nearly naked ears, and a soft pelage. It differs from the Norway rat in having a tail much longer than the length of its head and body and commonly having a darker-colored pelage. The pelage ranges from black to sandy brown dorsally and from lead colored to nearly white ventrally. The black rat…
The Pacific white-sided dolphin is most abundant in the Southern California Bight in winter, but move further north, off Oregon and Washington in summer. These animals can be found from the tip of Baja to the Aleutians and the western Pacific from the Kuril Islands to Japan. They prefer deep, off-shore waters, so sightings are usually limited to recreational and commercial fishers. The Pacific white-sided dolphin is about seven or eight feet long. It has three colors: the chin, throat and belly are creamy white; the beak, flippers, back, and dorsal fin are a dark gray, and there are light…
This dark colored salamander has a reddish-brown ragged edged stripe that runs along the top of the head to the tip of the tail with black or dark brown sides. It has a long body and tail and the belly is black with large white flecks. The Oregon slender salamander is a lungless salamander species, relying on its skin to breathe. Mature adults can grow to just under four inches in total length, with females about 12 percent larger than males. Oregon slender salamanders are most common in stable, moist old-growth (late successional and second-growth) forests where there are abundant…
Features: Bullheads found in Oregon are distinguished from channel catfish by their square or rounded tails and lack of spotting. They seldom exceed two pounds and 18-inches long. Brown bullheads are a mottled yellowish-brown with a yellow belly and dark chin “whiskers” or barbels that are white near the base. They have a square tail. Habitat: Bullheads are found on the bottom in the shallows of mud-bottomed ponds, lakes, reservoirs and backwaters of rivers. The brown species is common throughout the state. Technique: Bullheads can be caught any month of the year, but fishing is best from the first warm…
Features: Their eyed-side is greenish-brown to dark brown or black with lighter blotches. Their blind side is white to milky-white. They have a large, stout but flat body, shaped like an elongated diamond . Pacific halibut have been known to reach 500 pounds, but on average are 40 pounds. Habitat: Halibut are a large flatfish and so they spend much time near the bottom of the ocean looking above for food. They prefer chilly water and are primarily found in the Gulf of Alaska. Technique: Boat anglers use heavy rods to fish on or near gravel bottoms in water 150-500…
With a widespread distribution and affinity for open habitats, the Killdeer is one of the most common and recognized birds through much of North America. Killdeer are large for a plover and easily distinguished from other North American plovers by their characteristic two black or brownish-black breast bands. Killdeer are well known for their loud and persistent call of "kill-dee, kill-dee," heard at all times of day or night on both the breeding and wintering grounds. Killdeer often nest close to human activities. Adults perform an elaborate and exaggerated broken-wing display to lure humans and potential predators away from their…
The red tree vole is a medium-sized vole. It is uniquely colored among North American voles: bright orangish-red to cinnamon on the dorsum, silvery gray (often with some light orangish hairs) on the venter, and a tail pale orangish on the venter grading to black on the dorsum. This vole is endemic to western Oregon. It occurs at moderate elevations on the west slope of the Cascade Range southward as far as the Douglas-Jackson county line and in the Coast Range to the Oregon-California border. It is largely arboreal and builds nests on suitable foundations (commonly nests of birds or…
Wigeon drakes are beautifully marked with white pate, green eye stripe, purplish breast and flanks, white belly and wing covert patch, and iridescent black/green speculum. The grayish hen shows white on the wing covert patch. Drakes give a three-note whistle and get progressively noisier as spring approaches and courting flights begin. Medium sized flocks are common in fall and winter, and like geese, will be found grazing pastures, park lawns, and golf courses. It is a rare to locally common breeder in eastern Oregon and rare in summer in western Oregon. It is a common to abundant migrant and wintering…
Canada geese, with their distinctive black neck and head and white cheek patches, need little description because they are one of Oregon's most familiar and conspicuous birds. There are 11 subspecies of the Canada goose. As a whole, the species is widely distributed throughout Oregon, with the exception of mountainous and desert areas lacking reservoirs, lakes, or large rivers. Concentrations of wintering and breeding Canada geese occur wherever agriculture and other human developments provide green forage or small grains and water bodies provide sanctuary. Hear the call of the Canada goose Photo by Leise Wease
In Oregon, fork-tailed storm-petrels breed in numbers that are only a tiny fraction of those of Leach's storm petrels. This is the larger of the two storm-petrels breeding in Oregon and is gray in color. These birds leave and return to breeding colonies only at night, when they are best detected by their distinct raspy call. At sea, they are distinguished by quick, buoyant flight with short glides interspersed with wing fluttering to maintain their position at a food source. Fewer than 20 nests have been found in Oregon, all located in the same habitat as colonies of Leach's storm…
This fragile-looking bird with bold black-and-white plumage and exaggerated, long, reddish legs is often associated with American avocets at shallow inland ponds and lakes. Very noisy and aggressive in protection of its nest and young, using a variety of distraction displays, including an impressive broken-leg act to lure away interlopers. The Black-necked stilt is a locally uncommon to fairly common summer resident of Klamath, Lake, Harney and Malheur counties. The largest Oregon breeding colony is at summer Lake. It has become a regular spring and fall migrant through eastern Oregon and irregular spring and casual fall migrant through western Oregon…
All of Oregon's blue-colored birds are appreciated for their dazzling appearance, but the striking plumage of this summer visitor is accompanied by a song described as vivacious, varied, well-articulated and sweet. Males are unmistakable when singing from a prominent perch, flashing deep azure upper parts with rich orange-brown breast and flanks, a white belly, and white wing bars. Females are warm brown and relatively plain, though they share with males the habit of twitching the tail to one side when excited. The Lazuli bunting is fairly common in low-elevation dry valleys in Curry County but are becoming uncommon north through…
Bobolinks summer in Oregon's eastern grasslands and meadows, singing what has been described as a bubbling delirium of ecstatic music that flows from the throat of the bird like sparkling champagne. The yellow-brown female, juvenile or non-breeding male may at first appear to be a sparrow, but the breeding male has an astonishing and diagnostic backwards tuxedo pattern of buff on the nape and white rump and scapulars on an otherwise black body. The Bobolink is a regular, locally common breeder at the Malheur National Wildlife Refuge and a few scattered pairs occur in northeast Oregon. West of the Cascades…
Features: Bullheads present in Oregon (brown, yellow and black) are distinguished from channel catfish by their square or rounded tails and lack of spotting. They seldom exceed two pounds and 18-inches long. Black bullheads have a square tail with a light vertical bar at its base and chin barbels that are all dark. Habitat: Bullheads are found on the bottom in the shallows of mud-bottomed ponds, lakes, reservoirs and backwaters of rivers. The black bullhead is primarily in reservoirs and streams tributary to the Snake River. Bullheads feed on almost any type of plant or animal material; insect larvae and…
At certain estuaries and interior alkali lakes, flocks of many thousands of these migrants can be observed swirling around over shallow water, landing to frantically feed, before resuming migration. Falcons often attack Westerns, and their acrobatic, tightly coordinated escape flights are breathtaking to observe. In winter, these small sandpipers are gray above with white underparts. In breeding plumage they have a rich rufous-chestnut back, cheeks and cap, dark-centered scapulars with rufous-chestnut edges, grayish throats streaked with dark chevrons through the flank, and whitish underparts. Longer-billed females generally are larger than males but are otherwise similar in appearance. Along the coast…