Black-necked Grebe

The black-necked or eared grebe is a water bird whose breeding plumage features distinctive ochre feathers that extend behind the eye and over the ear coverts. The head, neck and breast are black to blackish brown, the flanks tawny rufous to maroon-chestnut and the belly white. In non-breeding plumage it is greyish-black above and white below, with a vertical stripe on the back of the neck (Wikipedia, general species account).

It uses several foraging techniques, catching insects, which make up most of its diet, on the water or in flight. At saline lakes where it moults it feeds mostly on brine shrimps. The nest is a floating cup on an open lake, in colonies or alone, with three to four eggs hatching after 21 days. The sources opened say nothing about its occurrence in Nepal.