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Article
H. Herman van Oosten, Auteur ; Willem van Manen, Auteur
Article
Willem van Manen, AuteurDans Limosa (74(3) 2001)In the winter of 1991/92 I studied a wintering group of Long-eared Owls. They spent the day in a group of Scots Pines Pinus sylvestris in which they were well visible and in an adjacent group of Spruce Picea abies in which they could not be coun[...]
Article
Willem van Manen, AuteurDans Limosa (73(3) 2000)Reproduction of Honey Buzzards was studied in a 6000 ha woodland area in the province of Drenthe in 1992-98. Breeding and non-breeding pairs were differentiated by means of behavioural clues. In the second part of the nestling stage Honey Buzzar[...]
