La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	A black-throated diver Gavia arctica preying on a common frog Rana temporaria on an inner alpine resting site
Auteurs :	Juergen Pollheimer, Auteur ; Martin Pollheimer, Auteur
Type de document :	Article
Dans :	Ornithologischer Anzeiger (37(1) Jan., 1998)
Article en page(s) :	69-70
Résumé :	In April 1995 a Black-throated Diver with a Common Frog in its digestive system was found dead at an inneralpine resting site for waterbirds in Styria, Austria. This is the first record of a Black-throated Diver foraging on amphibians for more than 100 years (NAUMANN 1844). Possible causes for this extraordinary prey selection might be limited fish resources in the small lake and decreased underwater visibility because of humic acids solved in the water.

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