Yellow-billed Duck
Anas undulata

see larger image South African Yellow-billed Duck Anas undulata undulata Calgary Zoo - Calgary, AB, Canada © 2005 Jeff Whitlock see larger image South African Yellow-billed Duck Anas undulata undulata Calgary Zoo - Calgary, AB, Canada © 2005 Jeff Whitlock

South African Yellow-billed Duck Anas undulata undulata

Related Links
E.J. Peiker, Nature Photographer
Jacksonville Zoo
Kenya Birds
Flickr - may have photos
Wikipedia - may have a species page