The changing status of the Pallid Harrier in western Europe

Pallid Harriers header

The changing status of the Pallid Harrier in western Europe

By Mike Henry

Abstract Since the 1990s the status of the Pallid Harrier Circus macrourus in western Europe has changed beyond all recognition. Once an extremely rare vagrant, it now appears increasingly regularly in several countries. Since 2003, a few pairs have bred in Finland in most years although numbers are influenced by vole population cycles. On migration, high numbers of juveniles usually follow good vole years, and the development of a northeast–southwest migration across Europe is discussed. Reports of birds wintering in southern and central Europe are increasingly frequent. A lack of data from the species’ core breeding range in European Russia and central Asia is hampering a better understanding of population changes.

To read the issue in full, you can subscribe to BB here

Juvenile Pallid Harrier, Dorman’s Pool, Cleveland, October 2011. Mike Henry

The post The changing status of the Pallid Harrier in western Europe appeared first on British Birds.


Source: Bird Watching

Author: Roger Riddington