Alfred Newton

“ The pied wagtail Motacilla lugubris is a common and generally distributed species in the British Islands, and common throughout northern Europe, but migrating southwards over a relatively narrow range in winter. The white wagtail, M. alba of Linnaeus, has a wide range in Europe, Asia and Africa, visiting England almost yearly, and chiefly differing from the ordinary British in its lighter-coloured tints—the cock especially having a clear grey instead of a black back. ”