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|Swan Goose (Domestic type) (Anser cygnoides (Domestic type)) Ducks, Geese and Waterfowl (Anatidae)|
|dk: Svanegås (tamform) es: Ganso Cisnal (doméstico)|
2016-10-25 Villa di Borghese, Rome, Italy
Adults. Domestic birds at large look like the wild birds concerning the plumage, but the grotesque bill knob and shorter bill are degenerations that always? happen. These birds tend to become overweight like the also present domestic Graylag geese.