 Great Black-headed Gull (Ichthyaetus ichthyaetus)
by Dave Barnes
|  Great Black-headed Gull (Gabbiano di Pallas)
by Daniele Occhiato
|  Grote Mantelmeeuw / Great Black-headed Gull
by Arie Ouwerkerk
|  Svarthuvad trut / Great Black-headed Gull
by Anders Blomdahl
|  Pallas's gull, Great black-headed gull
by Christopher Plummer
|
 Great Black-backed Gull or something else?
by Nick Komar
|  Great Black-backed Gull with yellow legs - Duxbury Beach - August 18, 2013
by Rick Bowes
|  My Favorites
by Jonas Landolt
|  Lake Nakuru National Park
by Dan Scheiman
|