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Article
The size and migratory origins of the population of Hen Harriers Circus cyaneus wintering in England
Andrew D. M. Dobson, Auteur ; Michele Clarke, Auteur ; Nils Kjellen, Auteur ; Roger Clarke, AuteurCapsule The majority of Hen Harriers Circus cyaneus that spend the winter in England are derived from the British breeding population. Aims To investigate the popular hypothesis that Hen Harriers which over-winter in England are derived principa[...]
Article
Andrew Dobson, Auteur ; Roger Clarke, Auteur ; Michele Clarke, AuteurDans Bird Study (56 2009)Capsule At a communal roost in Cambridgeshire, selection of common birds of arable farmland as prey is interpreted in terms of differences in prey species' behaviour and size.
