flock of Australian pelicans swimming in a pond, dipping their heads underwater in search of food

australian pelican pelican pelicans standing zoo bird wildlife waterfowl avian enclosure beak plumage habitat nature exotic creature ornithology aviary environment birdwatching aquatic landscape ecosystem peaceful flock pond wild lake natural animal pelecanus conspicillatus slow motion australian beaks water neck environmental zoology species tropical group surface dipping heads majestic underwater swimming birds behavior