Podiceps nigricollis A fragment of image from: http://www.biologie.uni-hamburg.de/b-online/birds/1613_10.htm aus: NAUMANN, NATURGESCHICHTE DER VÖGEL MITTELEUROPAS:...
at URL: https://www.flickr.com/photos/biodivlibrary/6059454022/ operator: Flickr URL: https://live.staticflickr.com/6201/6059454022_7189ee73c5_o.jpg...
jpg Podicipedidae. Tachybaptus ruficollis, Podiceps grisegena, Podiceps cristatus, Podiceps nigricollis, Podiceps auritus Date 1903 Source NAUMANN, NATURGESCHICHTE...
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