A flock of urban common silver gulls, chroicocephalus novaehollandiae walking on the rocky shore, foraging on bread crumbs at night in downtown Brisbane

bird seagull gull sea water white wildlife beak beach fly wild australia laridae habitat coastal silver common pacific brisbane melbourne red mackerel tarapunga chroicocephalus novaehollandiae scopulinus pacificus larus eat forage feed bill scavenge food shore seabird species rock rocky perch walk urban park bread crumb guano hungry flock swim