Note: Information is dated. Do not rely on it.Goose. A genus of web-footed birds, larger than the ducks, having the bill not longer than the head, more high than broad at the base, the upper mandible slightly hooked at the tip; the legs placed farther forward than in ducks, and so better adapted for walking; the neck of moderate length, with sixteen vertebrae, a character which widely distinguishes them from swans. In general, geese spend more of their time on land than any other of the Anatidae, feeding on grass and other herbage, berries, seeds, and other vegetable food. About forty species of geese are known in various parts of the world.