Large flock of urban silver gulls, chroicocephalus novaehollandiae swimming on rippling water toward the sandy beach shore, foraging and scavenging for food at downtown south Brisbane city at night

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 walk urban park bread crumb hungry flock swim manmade sand animal fight