Sliding Wader Migrant

Black-tailed Godwit Limosa limosa

A sliding migrant is one where the whole population moves south in winter. Very often there is an overlap where the birds are present all year,

An example of this is the Black-tailed Godwit. In the British Isles subspecies limosa breeding breeds in small numbers, but they move south for the winter to be replaced by subspecies islandica which breeds in Iceland.