The yellow-billed duck is a dabbling duck which is an abundant resident breeder in southern and eastern Africa. This duck is not migratory but will wander in the dry season to find suitable waters. These are mallard-sized mainly grey ducks with a darker head and bright yellow bill. The wings are whitish below, and from above show a white-bordered green speculum. It is a bird of freshwater habitats in the fairly open country and feeds by dabbling for plant food mainly in the evening or at night. It nests on the ground in dense vegetation near water. Rarely found in suburban areas, in close proximity to golf courses, parks and lakes or dams. The male has a teal-like whistle, whereas the female has a mallard-like quack.