About Black-headed Gull (Chroicocephalus ridibundus)
Black-headed Gulls breed primarily in Europe and central Asia, and range from northeastern North America and southern Greenland to northeastern China. Many winter in Africa, Malaysia, and the Philippines. Numbers of this species have risen in North America since the 1950s, and there are now breeding colonies in northeastern Canada. The earliest breeding record I could find for North America was from 1977.