Oustalet's Tyrannulet

Small dainty gull. Dark-eyed and long-winged with a rounded head. Breeding adults are white-headed with an unmarked bill; non-breeding adults are smudged on the head and bill. Younger birds are brownish, with black-tipped pink bills. Occurs in western North America, primarily breeding in Alaska and Canada and wintering to Baja. Breeds in wetlands, meadows, and beaches; winters in waterside habitats and fields. Does not frequent large urban centers as much as some other gulls.

Huge, wide-ranging vulture of the Andes, but also ranges into lowlands in southern Chile and Tierra del Fuego. Locally fairly common in Chile and adjacent Argentina, less numerous northward. Mainly seen as singles or pairs, sailing high over ridges, but tens can gather at roosts and to scavenge at carcasses. Size alone is diagnostic, but can be difficult to judge at a distance: note very long “fingers” at wingtips and white collar of adult. Adult also has diagnostic big white panels on upperwing, visible as birds bank. Immatures dark overall, becoming like adult in about 5 years.

A small bird, olive-green above and yellow below, with a bold white eye-ring and a yellow bill. Yellow in front of eye and on throat gives a yellow-faced appearance. Found in tall wet native forest above about 400 meters of elevation, but occasionally down to 200 meters. Voice consists mostly of high-pitched chirping.