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Terns are generally associated with marine environments and salt marshes, but the Forster's tern inhabits freshwater areas. During the breeding season this graceful bird is eastern Oregon's resident small white tern. Typical of terns, the Forster's employs a dramatic hunting method of plunge-diving into shallow waters to capture small fish, the bird sometimes submerging completely. This is an uncommon but highly visible colonial breeder east of the Cascades. Hear the call of the Forster's tern Photo by Dave Budeau, ODFW

This is a large and power falcon. The majority of Gyrfalcons seen in Oregon are immatures or adults of the "gray" type, but there are several reports of "white" birds. The Gyrfalcon is a regular winter visitant to Oregon. The majority of sightings come from coastal and Willamette Valley lowlands near waterfowl concentrations. Individuals have been seen chasing and feeding on geese, ducks and gulls. Gyrfalcons forage by flying low over the ground and flushing prey, then often giving spectacular tail chases. If a bird refuses to flush the hunt is usually unsuccessful. East of the Cascades it occurs around…

Oregon's owls are mostly nocturnal, hunting for insects, fish, frogs, birds, mice and other small mammals in the night. Their hoots, screeches and calls can be heard after dark or early in the morning. Owls don't build nests, but instead use tree cavities, nests created by other species, naturally occurring structures or human-made nest platforms. The Western burrowing owl nests underground in abandoned dens dug by squirrels, prairie dogs and badgers. Learn more about Oregon's owls.

The long-legged myotis lives in forests and comes out early in the evening to hunt. It is a fast flier and will chase insects for a long distance. One baby is born in the summer, and the species hibernates in winter. In general, the long-legged myotis is a species associated with montane coniferous forests, but it also occurs in some desert and riparian habitats. The long-legged myotis is an Oregon Conservation Strategy Species in these ecoregions: Blue Mountains, Coast Range, East and West Cascades, Klamath Mountains, and Northern Basin and Range. Photo by ©Michael Durham

The most common whale off the Oregon coast is the gray whale. In addition to the approximately 200 resident gray whales that live nearly year-round off Oregon, a winter and spring migration brings about 18,000 more past our coast. Gray whales are baleen whales (mysticetes). They grow to 50 feet in length and will weigh up to 80,000 pounds; adult females are larger than males, which is common in all baleen whales. They do not have a dorsal fin on their back but instead have a series of knuckles. These whales are mottled gray and are covered with barnacles and…

Characteristic of open country and cold weather, the Rough-legged hawk can be found soaring over exposed terrain or perched on utility poles across much of the state in winter. The rough appearance of its legs comes from the feathers covering their length, an adaptation that provides extra warmth in frigid weather. In flight, dark wrist patches and belly help identify this large buteo, though like other hawks it is subject to much variation in plumage. From a distance it frequently appears to have a frosty upper half. It often hovers over fields while hunting, a behavior that is rare among…

High overhead at the top of the rimrock in Oregon's desert country, the White-throated swift swoops, soars, and darts about erratically, hunting and catching insects. At great speed, it disappears into a crevice on a cliff without appearing to slow down. Its long, strong claws enable it to crawl deep inside these crevices to roosting and nesting areas, which often cannot be seen from the entrance. This bird is a locally common to abundant breeder, primarily on eastern Oregon cliffs. It is an occasional spring and sporadic fall migrant in western Oregon along the coast, in the Willamette Valley, and…

One of the most startling sounds in the black of night is the loud, harsh call of the Barn owl as it flies over field or marsh in search of small rodents. They are white to tan beneath with fine spotting ranging from almost none to fairly extensive. The face has a well-defined facial disc that acts as a parabolic dish collecting the faint sounds of its prey, allowing it to hunt successfully in total darkness. Male and female Barn owls are similar in appearance though the female is somewhat larger. The Barn owl is a fairly common permanent resident…

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…

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…