swan goose

…of northern Eurasia, and the swan goose (A. cygnoides), a wild goose from eastern Asia. Unlike its monogamous wild cousins, domestic geese are polygamous and thus more productive for commercial uses. The largest and most-popular domestic meat goose is the Toulouse. A by-product of goose-meat production especially important in Europe…

The swan goose (Anser cygnoides) of eastern Asia has also been domesticated, with three varieties. Other species, such as the Canada goose (Branta canadensis), the mute swan, and the Egyptian goose (Alopochen aegyptiacus), have been kept in semidomestication for ease of exploitation but without intensive breeding…