Knob billed duck (Sarkidiornis melanotos) in flight. From Sub Saharan Africa, Madagascar, and Indochina. : r AIDKE The knob billed duck (Sarkidiornis melanotos) is today's Species of the Day. It is native to Sub Saharan Africa as well as parts of South Asia, particularly India. It was once treated as the Portrait of knob billed duck (Sarkidiornis melanotos), Tanzania Photographic Print Panoramic Images AllPosters.com Female Knob Billed Duck (Sarkidiornis melanotos) Joel Sartore Comb Duck (Sarkidiornis melanotos) flying over a wetland in the South of Ecuador Stock Photo Alamy Knob billed Duck eBird