By DickDaniels (http://carolinabirds.org/) (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)
Africa. Africa south-east of a line from northern Angola to North Sudan including Madagascar.
No documented escapes known. Possible natural vagrants have been recorded in Israel. Not widely kept but apparantly quite easy to maintain. Not prone to hybridisation but has paired with Yellow-billed Duck