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Adults have smooth, moist skin that is brown or reddish-brown in color with black flecks on their backs, sides and legs. They may also have a dark colored mask. Adults have red underlegs, hence their name. Females, growing to four inches in length, are almost twice the size of males. Adult red-legged frogs like cool damp coniferous or deciduous forests and forested wetlands. During the non-breeding season, adult frogs spend most of their time on land in woodlands along streams, in moist sedge or brush, along shaded pond edges or under logs and other forest debris. Damp weather permits them…

The gregarious Tricolored blackbird is one of North America's most intensely colonial breeders, forming dense, non-territorial, noisy colonies. A highly synchronized nesting system exploits secure nesting locations and rich food supplies that change from year to year. In Oregon, breeding colonies are scattered and intermittent at specific locations, though sites used during consecutive years may be in the same general area. The Tricolored blackbird breeds most consistently in Klamath and Jackson Counties. Small colonies and summering residents have been found in the Willamette Valley; during fall and winter they are rare. Most retreat south to California in winter, while some…

Adult treefrogs have a dark mask that extends from the tip of the nose across the eyes to the shoulders. Coloration varies between individuals, ranging from green or reddish to brown or gray. Most have dark blotches along their sides with light colored bumpy undersides. They have special skin glands that produce a waxy coating to keep their skin moist. Male treefrogs have a dark gray, inflatable throat pouch during the breeding season. As the smallest frog species in Oregon, adult Northern Pacific treefrogs only grow to two inches in length. During the non-breeding season, this treefrog is found in…

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 It also has an enormous orange bill, and flies with neck withdrawn.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…

The Bald eagle is one of eight species of sea-eagle worldwide, and the only sea-eagle found throughout North America. It is one of the most studied North American birds. Large size, wingspan of six-and-a-half to eight feet, and the contrast of white head and tail, and yellow eyes, beak, and leg, to dark brown body and wings make the adult Bald eagle one of our most distinctive raptors. Six age-related plumages have been recognized; adult plumage is acquired at four-and-a-half to five years of age. Sexes have similar plumages, but females are larger than males, and the sex of individuals…

A group of twittering, tiny gray birds streaming through bushes and trees and across openings surely are Bushtits. Females' eyes are pale, males' dark. They are highly gregarious except when nesting. The intricately made sock-like nest is unusually large for the size of the bird. Bushtits show a distinct indifference to humans and regularly nest within residential neighborhoods and establish foraging routs throughout many cities. They regularly take suet at bird feeding stations and visit backyard birdbaths. The Bushtit is a fairly common resident throughout Oregon except in Umatilla, Union, and Wallowa counties and at higher elevations of mountain ranges…