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Of several swans found in Oregon, the tundra swan is by far the most common during the non-breeding season. It is most readily distinguished from the similar-appearing trumpeter swan by voice, although subtle differences in physical appearance and behavior can separate the two with difficulty. It is a fairly common transient throughout the state but most abundant at large bodies of water and wetland complexes east of the Cascades including the Malheur National Wildlife Refuge and the surrounding Harney Basin, Summer Lake Wildlife Area and the Klamath Basin. Hear the call of the tundra swan Photo by Kathy Munsel, ODFW

This large bird of prey is dark above, white below, and has a visible dark spot at the wrist of the wing when flying. The head is black and white. Juveniles have buffy-tipped dark feathers above. In flight, the wings have a noticeable angle or "crook." This highly migratory fish-eating species is frequently found nesting along larger rivers, lakes, and reservoirs. A large bulky nest at the very top of a live, broken top,or dead tree and more recently on utility poles, channel markers, pilings, and cell phone towers near fishable waters is good evidence of Ospreys. The Osprey breed…

The wild turkey is the largest game bird in North American with mature males weighing upwards of 20 pounds and standing 40 inches tall. These large terrestrial birds are generally dark brown to black in appearance but iridescent color in feathers ranging from gold and copper to green and black gives a metallic appearance, particularly in full sunlight. Males and about 10 percent of females sport a unique beard of keratinous filament that protrudes from the junction of the breast and neck. Beards grow continuously but rarely exceed 10 inches in length. Females are smaller and duller in appearance. Densities…

Large and primarily white, the American white pelican has the longest wingspan of any bird in Oregon. It also has an enormous orange bill, and flies with neck withdrawn. During the breeding season the top of the bird's head becomes dusted with black and a horn grows on the upper mandible; this projection serves as a target for aggressive encounters to avoid injury to the essential bill pouch, but is shed after the eggs are laid. This pelican makes unusually long flights for feeding and migration, and at great distances, soaring flocks have been reported as UFOs. In Oregon, it…

Although quite common in the U.S., the Black-crowned night-heron's nocturnal and crepuscular feeding habits can make it difficult to locate. Its habitat consists of marshes, lakes, rivers, and other wetlands, where it feeds mostly on fish. It is a thick-billed, medium-sized, stocky heron with relatively short neck and legs. Adults have a black back and cap which contrast with the pale gray or whitish underparts. Immatures have brown backs with large pale spots and heavily streaked underparts. A distinctive choking squawk call is often heard at dusk. It is a fairly common summer resident east of the Cascades where it…

The cougar is the largest felid in Oregon, and except for the jaguar, the largest felid in the western Hemisphere. The skull of the cougar, also know as mountain lion, is massive; the canine teeth are large and slightly recurved. The heel pads of both fore and hind feet have three lobes on the posterior margin which are useful in separating the tracks of a cougar from those of other felids, such as the lynx. The dense and soft dorsal fur typically is tawny, but slate gray and reddish brown individuals are known. The venter is whitish. The back of…

The song of this wren is often mistaken for the Song sparrow in the thickets and open woodlands where it resides. When in view, however, its long tail, thin bill, and white line above its eye are distinctive. Found in a variety of habitats, it readily takes advantage of cleared forest grown to large shrubs, especially blackberries. It is a permanent resident west of the Cascades, in Klamath and Warner basins, and along the upper Columbia River and tributaries. Hear the song of the Bewick's wren Photo by David Hoffman, Flickr