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Almost strictly nocturnal, the Western screech-owl hunts discreetly at night and roosts during the day in dense woodlands, its perfectly streaked plumage allows it to pass as tree bark. These habits make it difficult to see, and it is more common than many are aware. It is a small owl with yellow eyes and feathered ear tufts. It exhibits geographic variation in plumage color and pattern: both gray morphs and brown morphs occur in the Pacific Northwest. Sexes are alike. The Western screech-owl is a fairly common year-round resident in lower-elevation woodlands throughout Oregon. It is usually found below 3,000…

This tiny owl has a reputation as an aggressive predator on everything from mice and voles to birds and mammals over twice its size. Coloration is highly variable with brown and gray morphs. In Oregon, color varies from dark brown in coastal mountains to gray in eastern Oregon, with an intermediate pale grayish-brown form in the Cascade mountains. About the length of a White-crowned sparrow, it has striking yellow eyes, dark vertical streaks on the breast and abdomen, and dark "eyespots" on the back of the head. It is primarily diurnal and can often be approached quite closely when it…

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…

With short pointed wings and long narrow tails, these small falcons are well built for fast pursuit and mid-air attacks. Sexes differ in color and size, with adult males about 25 percent smaller by weight than females. Males range from blackish gray to pale blue-gray on the back with a reddish wash along sides of the breast and a banded tail; females have brownish backs. In winter, it can be found throughout the state in open or semi-open habitats, but it is most regular near major estuaries, lakes, reservoirs, and occasionally in cities where food supplies are reliable. For nesting…

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…

Features: The Pacific sanddab is left-eyed, meaning both eyes are on the left side of the body. The eyed-side is dull light brown, mottled with brown or black, and sometimes yellow or orange. The blind-side is off-white to tan. They have an oval shaped body with large scales. They can grow to be 16-inches long and up to 2 pounds, though most weigh less than 1/3 pound. Habitat: As you probably guessed, sanddabs like to hang out on sandy bottoms. They are most abundant at depths of 20-50 fathoms, and are common in shallow coastal waters from British Columbia to…

As the winter day turns to dusk, White-tailed kites drop into their roosts and Short-eared owls rise to take their place on the local hunting grounds. White-tailed kites in Oregon often roost communally in winter, but they disperse in early spring and are more difficult to find during the breeding season. By day, they are conspicuous as they hover over rural fields searching for prey, in part because of their pale appearance. The tail is entirely white, as are the head and the underparts. Dark crescents on the underwing can be seen when a bird is flying or hovering. Above…

Peregrine falcons are among the most charismatic and noted of the world's birds. They are described as the fastest animal on the planet, and have been recorded reaching speeds in excess of 240 miles an hour in dives after prey. They are one of Oregon's boldest raptors, and have been observed usurping active Golden eagle nest sites, stealing fish from Ospreys and ground squirrels from adult Bald eagles who stray into their territory. It has, for perhaps 4,000 years, been used by falconers because of its skill in capturing game birds in tandem hunts with humans. Peregrines are medium-sized raptors…

The Northern harrier is a slender, medium-sized hawk characterized by a noticeably long tail, bold white rump patch, and owl-like face. Commonly encountered in large expanses of open country, its main hunting technique is through use of a distinctive buoyant, gliding flight low over the ground that relies heavily on visual as well as auditory cues to detect prey. The larger females have rich brown upperparts while adult males are mostly light to medium gray, sometimes appearing almost ghostly silvery-white. Males are noted for their high-spirited and acrobatic courtship displays, in particular a series of dives and barrel rolls in…

The Short-eared owl is one of our most conspicuous owls owing to its use of open country and crepuscular habits. It is often seen hunting low over the ground across marshes, fields, and other open areas on its buoyant, long wings, flying slowly and irregularly like a giant moth. This owl also differs from most other owls as it seldom vocalizes and is more often seen than heard. It was named for its inconspicuous "ear" tufts arising from the center of the forehead, though field observers rarely see these tufts. Distinguishing characteristics include a pale buff facial disk and a…

The majestic trumpeter swan is the largest of our native waterfowl and one of the heaviest flying birds in the world with males sometimes exceeding 30 pounds. Historically hunted to the brink of extinction, it was recognized as an endangered species long before there was an Endangered Species Act, and its recovery is a conservation success story. The adult's snow-white plumage with contrasting black bill and feet and 8-foot wingspan define this magnificent bird. Their neck is as long as their body and is used to reach food at the marsh bottom. In spring, the trumpeter swan is a locally…