beach bird birds feather feathers gull nature ocean pier port sea seagull water animal animals birth high nest stork storks UP wing wings zoo aquatic Australian black black-bill black-winged-stilt carnivores carnivorous cautious dog-bird foraging himantopus-himantopus long-beaked long-legged longshanks mature pied-stilt red-legged sharp-beaked sharp-bill shore-bird stilt territorial thin wader wading wading-bird white white-headed-stilt wide-spread bill common pochard cutout duck isolated pochard flying free freedom groningen silhouette swift vector beak fence Field Sparrow grass Perching bird songbird terrestrial animal eagle eagle_owl eyes falkoner feathered natural owl wildfowl women