Pacific Golden Plover

The Pacific golden plover is a compact, upright shorebird with a short bill and long wings. Breeding adults are spangled gold and black above, with a black face and underparts bordered by a clean white stripe from forehead down the neck and flanks. Nonbreeding birds are golden-brown above and pale below. Compared with the European golden plover it is slimmer, longer-legged and longer-winged, with grey underwings. (Wikipedia, Pacific golden plover account)

This is a long-distance migrant breeding on Arctic tundra and wintering across southern Asia and the Pacific. During migration it uses lake margins, mudflats, short grassland and fields, running and pausing to pick insects, worms, molluscs and other small prey from the surface. The nest is a shallow ground scrape, and both parents attend the eggs and young. The opened account did not specify Mongolian stopover lakes or timing, so no national locality is asserted. (Wikipedia, Pacific golden plover account)