Black Kite

The black kite is a medium-large brown raptor with long wings and a shallowly forked tail. In soaring flight the tail twists constantly and the wings show paler panels, while the head is lighter and finely streaked. It is smaller and less strongly fork-tailed than the red kite. Juveniles are more heavily streaked below. The buoyant, manoeuvrable flight and habit of circling over water or settlements make it conspicuous. (Wikipedia, black kite account)

Black kites occupy open country, wetlands, river valleys and human settlements across much of Eurasia, Africa and Australasia. They are opportunistic feeders, taking carrion, fish, insects, small vertebrates and refuse, often snatching food from the ground or water surface. Pairs build stick nests in trees or on structures. Northern Asian populations migrate south after breeding. The opened general account did not identify a Mongolia-specific breeding site or migration window, so no named viewing locality is included. (Wikipedia, black kite account)