aquatic Australia Australian beak bill bird black black-necked-stork bluish-black-iridescent carnivore color colored coloring colors colour coloured colouring colours contrast contrasting ephippiorhynchus-asiaticus feathers glossy head iridescence Jabiru large-birds long-legged long-necked near-threatened plumage slender stork waders wading-bird water-bird wetlands fauna long-flattened-beak platalea-flavipes reflections shiny spoon-shaped-bill spoonbill sunlight sunshine wetlands-bird wildlife yellow-billed-spoonbill