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Morphometric differences between sexes and populations in Norwegian Dunlins Calidris alpina

Sarah Malick-Wahls, Auteur ; Ingvar Byrkjedal, Auteur ; Barbara Ganter, Auteur ; Jan T. Lifjeld, Auteur ; Gunnhild Marthinsen, Auteur ; Hans-Ulrich Rösner, Auteur ; Terje Lislevand, Auteur

Dans Bird Study (72(2) May, 2025)

The sex of Dunlins from two widely separated Norwegian breeding populations can be determined using morphometrics, with the Dunlins’ sizes differing between populations. We aimed to understand the Dunlin’s physical characteristics within and out[...]

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Heavy decline of the largest European Arctic Skua Stercorarius parasiticus colony: interacting effects of food shortage and predation : Bird Study

Rob S.A. van Bemmelen ; Hans Schekkerman ; Vincent Hin ; Morrison T. Pot ; Kirstin Janssen ; Barbara Ganter ; Hans-Ulrich Rösner ; Ingrid Tulp

Dans Bird Study (68(1) April, 2021)

Capsule The number of breeding pairs of Europe’s largest Arctic Skua Stercorarius parasiticus colony at Slettnes, Norway, showed a dramatic decline of at least 50% over two decades, with food shortage in four years and increasing predation by Re[...]

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