A Spur-Winged Goose is actually a duck, but it is the largest of the african waterfowl, weighing as much as 20 pouinds. It is very shy, especially during the moult. It gets its name from a spur (both sexes) located at the wing-bend ('knee').They can be seen solitary, in small groups, or in very large packs, in ponds and flooded grasslands. Their diet is grass shoots, grain, seed, and plants. [Botswana].