This gull breeds in colonies in large reedbeds or marshes, or on islands in lakes, nesting on the ground. Like most gulls, it is highly gregarious in winter, both when feeding or in evening roosts. This is a bold and opportunist feeder, which will scavenge in towns or take invertebrates in ploughed fields with equal relish. The summer adult has a pale brown head, a pale grey body, and red bill and legs. The black tips to the primary wing feathers have conspicuous white "mirrors". The underwing is grey with black flight feathers. The brown hood is lost in winter, leaving just dark vertical streaks.
The Brown-headed Gull, is a small gull which breeds in the high plateaus of central Asia from Turkmenistan to Mongolia. Seen at Nalsarovar Bird Sanctuary.
In my spotting of black headed gulls http://www.projectnoah.org/spottings/846... I had written that there was another species with black bands at the ends of the tail, but was not sure what they were. Later on after seeing Atul's spotting I found that these were brown headed gulls.