Since late March, brown-headed gulls have been arriving in Tacheng City among large flocks of migratory birds. It is known that the brown-headed gull is a medium-sized water bird of Laridae, with a body length of 41 to 46 centimeters. The mouth and feet of brown-headed gull are deep red, and the feather of its head is light brown in summer. It has a black feather edge near the neck, forming a black collar. The shoulders and back of the gull are light gray, while the rump, tail, and lower body are white. They are mainly found in central, south and southeast Asia and breed in China’s Xinjiang, Qinghai and Tibet.
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