Ole Jorgen Liodden / Pacific Gull (Larus pacificus) Tasmania. December.

Ernie Janes / Pacific gulls (Larus pacificus) in flight over beach Tasmania, Australia.

Ernie Janes / Pacific gull (Larus pacificus) feeding on beach, Tasmania, Australia.

Ernie Janes / Pacific gull (Larus pacificus) feeding on beach, Tasmania, Australia.

Gerrit Vyn / Slaty-backed gull (Larus schistisagus) calling. Chukotka, Russia. June.

Gerrit Vyn / Slaty-backed gull (Larus schistisagus) Chukotka, Russia. June.

Jan Wegener / Pacific Gull (Larus pacificus), Australia

Jan Wegener / Pacific Gull (Larus pacificus), Melbourne, Australia

Ole Jorgen Liodden / Pacific Gull (Larus pacificus) in flight. Tasmania. December.

Martin Willis / Pacific Gull (Larus pacificus) pair by the ocean, Cheyne Beach, Western Australia, Australia

Jouan & Rius / Pacific gull (Larus pacificus) portrait of juvenile standing on rocks, Kalbarri National Park, Western Australia

Jouan & Rius / Pacific gull (Larus pacificus), Kangaroo Island, South Australia, Australia