Whooper Swan Cygnus cygnus

摘要

There was a small drop in the number of pairs of wild Whooper Swans reported in 2016, and one of these was again a mixed pairing: a female apparently paired with a Mute Swan C. olor, in Clyde. Although only one pair bred in the Norfolk fens in 2016, there were at least six summering nearby in Cambridgeshire and other single birds elsewhere in England and Scotland also summered. No apparently naturalised pairs were reported.