Declining Hen Harrier populations in the UK and Isle of Man: A 2010 national survey
Numbers drop by 18% in recent studyThis article published in Bird Study , written by Hayhow, Eaton et al. examines the methodology and outcomes of the 2010 national survey of Hen Harrier populations in the UK and Isle of Man. The Hen Harrier is a ‘Red Listed Bird of Conservation Concern’ in the UK and hence, its population is closely observed and has been subject to frequent national surveys. Previous surveys have shown increasing number of Hen Harrier pairs; in 1988/9, 478-669 pairs, in 1998, 570 pairs and in 2004 a 41%