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Keywords from Image Description:
The genera of birds . ANSERLVE canadensis Linn PI enl Wils Amer Om pi leucopareia Brandt Desc et Icones Faun Ross Anser canadensis Pall Hutchinsii Richards Swains Faun Bor Amer indica Gmel Gould Cent of Birds pi Anser undulatus Bonn grandis Gmel Nettapi'S Brandt Bill small more elevated at the base than broad the