Gerold Dobler / March 2021 – vol. 114, issue 3, pp 133–147 Gerold DoblerAbstract Observations in central Europe suggest that the Hen Harrier Circus cyaneus shows marked territorial behaviour in the wintering grounds. During the day, dominant females occupy the best feeding areas (with high vole densities) and defend them, primarily against conspecifics but to some extent also against other raptors. Subdominant females and all males are atta... This article is only available to registered users.To read more, please log in or purchase a subscription.