
Chroicocephalus genei
Slender-billed Gull

Chroicocephalus maculipennis
Brown-hooded Gull

Chroicocephalus novaehollandiae
Silver Gull

Chroicocephalus novaehollandiae ssp scopulinus
Red-billed Gull

Chroicocephalus philadelphia
Bonaparte's Gull

Chroicocephalus ridibundus
Black-headed Gull