Tag Archives: Apodidae

Plain Swift wintering areas revealed by a geolocator study

The Plain Swift (Apus unicolor) breed on the Canary Islands and Madeira in the north-east Atlantic. The populations of these two Macaronesian archipelagos are believed to be partly migratory, with an unknown proportion of the breeding population departing the islands during the winter months. Before the geolocator study reported here, the wintering grounds for the… Read More »