
Black-headed Gull
Chroicocephalus ridibundus

Bonaparte's Gull
Chroicocephalus philadelphia

Brown-hooded Gull
Chroicocephalus maculipennis

Red-billed Gull
Chroicocephalus novaehollandiae ssp scopulinus

Silver Gull
Chroicocephalus novaehollandiae

Slender-billed Gull
Chroicocephalus genei