beak bird black blue close-up eye feather head peacock Accipitridae Bird of prey falconiformes Natural landscape plant water birds eyes feathers killdeer legs nature outdoors plover sand wildlife Australian black-bill black-winged-stilt carnivores carnivorous dog-bird foraging himantopus-himantopus-leucocephalus long-beaked long-legged longshanks pied-stilt red-legged reflections ripples rippling sharp-beaked sharp-bill stilt stream thin wader wading water-bird white-headed-stilt flamingo neck Nyberg Phoenicopterus red wing flightless grass grey leg rhea walk