La Tour du Valat

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Twenty-five years Hen Harriers Circus cyaneus on the island of Schiermonnikoog

C. A. van der Wal, Auteur ; R. Keizer, Auteur ; S. E. van Wieren, Auteur

Dans Limosa (72(1) 1999)

The breeding ecology of the Hen Harrier Circus cyaneus has been studied on the island of Schiermonnikoog during the period 1973-97. In the first half of the study period (1973-85), the Hen Harrier was the most common harrier on the island, and t[...]

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