vagrant immature bonapartes gull chroicocephalus philadelphia. malta, mediterranean

gull water winter nature action activity animals avian background beak beach behaviour beautiful bill birds bird watching black bonapartes chroicocephalus close-up coast feather flying horizontal immature juvenile malta migrant morning ocean one ornithology outdoors perched philadelphia plumage portrait preening rare salt-pan sea seagull side view smallest sunny unrestrained vagrant wall wildlife wing