canadensis (I) Red-breasted goose (Rothalsgans), Branta ruficollis Mute swan (Höckerschwan), Cygnus olor Black swan (Schwarzschwan), Cygnus atratus (I) Whooper...
69 KB (6,886 words) - 00:10, 4 August 2024
[PDF; retrieved on October 18, 2022]).↵ Here p. 237. Gerald Mayer: Der Höckerschwan (Cygnus olor) in Oberösterreich. In: Monticola. Volume 2. Linz 1969,...
30 KB (3,888 words) - 19:26, 15 May 2024