whooper swans (cygnus cygnus) at the coast of southern iceland, nearby selvogur

reflection waterbird waterfowl shorebird wildlife wetland seabird mudflat animal winter nature water marsh bird beak wing sea swan couple whooper Cygnus nesting Iceland southern coast ocean atlantic nest breeding season summer ornithology protection environment plumage feathers Europe birdwathing fauna biology seagrass wilderness tranquil tranquility grooming