Chestnut-sided Warbler

A brightly colored bird with various shades of blue on the wings, tails, and belly that are often more prominent in flight. Note the longitudinal white streaks on the throat and breast. Indochinese Roller has a purple-blue breast, a darker olive back, and is generally darker blue. Generally silent, but more vocal in breeding season with harsh calls. Prefers open areas, including agricultural landscapes, sitting on exposed perches including electric wires, occasionally pumping its tail slowly. Practically a resident roller with some movements in the western parts of its range.

Chunky, long-tailed tan bird. Found in high-elevation arid scrub with bushes and scattered trees. Pale tan below, reddish brown above, with a fairly heavy bill. Pale throat, thicker bill, and larger size help distinguish it from similar canasteros. Forages in dense bushes and occasionally on the ground. Listen for a series of squeaky yelps: “pyeek, pyeek, pyeek….”

Plump chickenlike bird found in rocky tundra and alpine summits. Plumage changes strikingly throughout the year. In winter, both sexes are pure white with black outer tail feathers. As summer progresses, male develops cold grayish-brown feathers on head, neck, and back; generally quite splotchy looking. Summer female is paler golden-brown with intricate black and white markings. Female nearly identical to Willow Ptarmigan; look for slightly smaller bill. Summer male Willow and Rock Ptarmigans can be separated by the colder grayish plumage on Rock Ptarmigan and in winter by the distinctive black eyeline on Rock Ptarmigan. Also note habitat differences. Best distinguished from White-tailed Ptarmigan by black outer tail feathers. Vocalizations include guttural groaning and clucking notes.