Rare Gull Arrives
|Black-headed Gull [Nelson Poirier Photo]|
The Black-headed Gull is a small gull, a little smaller than a Ring-billed Gull. Though a little larger than the Bonaparte's Gull, it looks similar. In this geographical area we have to distinguish the Black-headed from the Bonaparte's Gull. The Black-headed has a larger bill which shows dark red at the base (Bonaparte's bill is all black); the legs on the 1st-winter birds are orange compared to the pink legs on a 1st-winter Bonaparte's; the underwing of the Black-headed shows more extensive black on the primary feathers than the Bonaparte's; the legs on the adult Black-headed are a deeper orange-red. If the two birds are side-by-side, differentiation is easy. But seeing a single bird requires a close look.
|Black-headed Gull Adult Nonbreeding Plumage|