Euler's Flycatcher

Very large, pale gull. Adults are mostly white with a very pale gray back; note pure white wingtips. Immatures are white or pale tan with light brown markings; also look for the distinctive pink bill with sharply demarcated black tip. Most similar to Iceland Gull but larger, larger-billed, and usually even paler; Iceland typically shows more dark markings on wingtips. Also note shorter wingtips on Glaucous that do not extend far past tip of tail. Breeds in the High Arctic; winters farther south in a variety of habitats, rarely far from a large body of water. Often seen in small numbers mixed with flocks of other large gulls. Hybridizes with Glaucous-winged Gull and Herring Gull in parts of range; hybrids can show any mix of intermediate traits and are sometimes best left unidentified.

A large, sturdy gull of East Asia. 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 tricky. Occurs inland and along the coast, frequenting river mouths, harbors, beaches, lakes, and ponds. Often forms flocks with other gulls. Back color of adults generally a shade darker than that of American Herring Gull. Very similar to Mongolian Gull, and separation is tricky, but has a larger head and bill; adults also generally have pinker legs.

A distinctive small cuckooshrike with bright white underbody, a dusky gray upperside, and a prominent red eye. Males display a contrasting black face and chin, while females’ faces have the same gray color as the back. An arboreal bird, usually encountered singly or in pairs (or occasionally small parties) within mixed-species flocks in canopy of montane forest. Song starts with one or two piercing high “whit” notes followed by a short jumble of four notes. Also gives single high-pitched “whit” and “seep” calls.