This bird wears its crown not of feathers, but of horn. The Knob billed Duck (Sarkidiornis melanotos), also known as the Comb Duck, is one of the most unmistakable waterfowl in the world. Sarkidiornis melanotos (Comb duck, Knob billed duck) Duck Knob billed (Sarkidiornis melanotos) female Kruger South Africa World Bird Photos Knob billed Duck eBird Female Knob Billed Duck (Sarkidiornis melanotos) Joel Sartore The Knob billed Duck (Sarkidiornis melanotos) is hard to missthe males grow a huge black knob on top of their bill during the breeding season. Found across Africa and South Asia, these ducks