Gray-sided Laughingthrush

A large gull found throughout northern Europe. Adults have a fairly pale gray back, pale eye, and dull pinkish legs. Takes four years for immatures to progress from mostly brown to fully white and gray adult plumage; intermediate plumages are often mottled and messy. Extremely variable plumage can make identification a challenge. Adults can normally be identified by a combination of their large size and pale-gray back. Usually shows a dull pinkish base to the bill by the first winter, and develops a pale eye by the second winter. Some immature birds can fade to almost white, especially in their first or second summer, but they always show darker wingtips. Occurs inland and along the coast, frequenting fishing boats, beaches, lakes, and landfills. Often forms large flocks with other gulls.

Uncommon and local, rather small hummingbird of humid forest edge, plantations, and woodlands in tropical lowlands and foothills. Perches and feeds mainly at middle to upper levels in shady understory and at edges. Note the bright red bill and greenish-gold tail (which often looks grayish). Male has violet gorget. Female has violet throat spotting, but often these areas look rather dull and grayish unless they catch the light.

Very local, long-tailed, and social parrot of mountains in northwest Mexico. Feeds in pine and pine-oak forests. Nests colonially in groves of giant aspens, whose soft trunks allow nest cavities to be excavated. Usually found in flocks, of 10–100 birds, less often in scattered pairs; often located by its far-carrying, raucous laughing calls. No similar species in its range; note the red forehead and small red shoulder patches. In flight shows a broad yellow stripe under the wings.