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Article
Arnold van den Burg, AuteurDans Limosa (75(4) 2002)During the last decade, the Eurasian Sparrowhawk population of the Veluwe, the largest continuous woodland area of The Netherlands, has declined by 50%. One hypothesis is that this was caused by a decrease in food supply for Northern Goshawks A.[...]
Article
Johan de Jong, Auteur ; Arnold van den Burg, AuteurNominate Barn Owls Tyto a. alba can be sexed based on flecking patterns of the underwing and underbody, but in the Dutch population consisting of the nominate subspecies and IT a. guttata, overlap in flecking exists between the sexes. In this pa[...]
Article
Johan de Jong, Auteur ; Arnold van den Burg, AuteurDans Ardea (97(4) 2009)
