This article presents some observations on the winter roosting behaviour of Hen Har- riers Circus cyaneus in northern England during the winters of 2006/07 and 2007/08. The 7-km2 study area of low-lying hills (100-235 m asl) is a mixture of bog, heath, conifer plantation, and rough and improved pasture. In total, seven Hen Harrier roosts were observed, which were used between 1st August and the end ...

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