White-winged Tern

The White-winged Tern, or White-winged Black Tern (Chlidonias leucopterus) is a small tern generally found in or near bodies of fresh water across from Southeastern Europe east to Australia.
The name 'White-winged Tern' is the standard in most English-speaking countries; in Britain, this name is also the one used by the formal ornithological recording authorities, but the older alternative 'White-winged Black Tern' is still frequent in popular use.