Yemen Thrush

Large dark swift with long sickle-shaped wings and a forked tail, which is often kept closed in a needle-tipped point while in flight. Black overall with an ashy gray throat and a thin white rump. Distinguished from needletails by proportionally longer wings, longer and more slender body, and much longer tail. Closely related Pacific Swift has a broader and brighter rump patch and a whiter throat. Faint greenish gloss on the back is diagnostic but difficult to see. Like other "fork-tailed swifts", usually seen in flight over hills, forests, and open areas. Gives high thin notes as well as a grating trills. Breeds in limestone caves.

A chunky, large-headed bird of open areas, usually found perched on wires or flying around in search of insects. Soft gunmetal gray with white underparts. Often found pressed together in pairs or tight groups when at rest. Sometimes flies in the same areas as swallows and swifts, but has a much thicker build, with triangular, somewhat starling-like wings. The only woodswallow throughout most of its range. Song is a somewhat myna-like series of sweet warbling and harsh chattering. Also gives nasal scolding “nyeh”, comparable to a jay or treepie.

Rare and declining Asian shorebird. Similar to Common Greenshank, with a burlier, more bull-headed appearance, shorter legs, and thicker bill. Breeding adult mostly gray above, white below, with densely spotted breast and upper sides. Nonbreeding adult pearly gray above and snowy white below. Bicolored bill is olive-green at the base, darkening towards the tip. Call is distinctive, usually a single nasal note, instead of the mellow “tu-tu-tu!” of Common Greenshank. Breeds in coastal marsh and sparse wet forests; winters on mudflats, coastal wetlands, aquaculture ponds, and paddies.