Black-winged Stilt

The black-winged stilt is a very long-legged wader in the avocet and stilt family, widespread in Europe, Asia and Africa. Its taxonomy is contested: the name is sometimes used for one almost worldwide species and sometimes restricted to the Old World form, with the black-necked, white-backed and pied stilts treated as separate species, so most sources accept between one and four species (Wikipedia, general species account).