Jouan & Rius / Silver gulls (Chroicocephalus novaehollandiae) in flight, Western Australia

Pete Oxford / Silver gull (Chroicocephalus novaehollandiae) on water, North Stradbroke Island, Queensland coast, Australia

James Brickell / Blind Tiger Snake (Notechis scutatus) and Silver Gull (Chroicocephalus novaehollandiae) on Carnac Island, Perth, Western Australia. A proportion of the tiger snakes on the island (including this one)...

Rod Williams / Silver Gull (Chroicocephalus novaehollandiae) pair on rock on ground, Burleigh Heads, SE Queensland, Australia, March

Tim Laman / Silver gull (Chroicocephalus novaehollandiae) standing in water, Queensland, Australia

Tim Laman / Silver gull (Chroicocephalus novaehollandiae) scratching its head, Queensland, Australia

Tim Laman / Silver gull (Chroicocephalus novaehollandiae) portrait, Queensland, Australia

Tim Laman / Silver gull (Chroicocephalus novaehollandiae) head portrait, Queensland, Australia

Tim Laman / Silver gull (Chroicocephalus novaehollandiae) portrait, Queensland, Australia

Tim Laman / Silver gull (Chroicocephalus novaehollandiae) walking, Queensland, Australia

Jouan & Rius / Silver gull (Chroicocephalus novaehollandiae), Victoria, Australia

Pete Oxford / Silver Gull (Chroicocephalus novaehollandiae) North Stradbroke Island off Queensland coast, Australia