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 Vogelgids: Knob billed duck (Sarkidiornis melanotis) test.sierwatervogels.nl Knob billed Duck Sarkidiornis melanotos Talking about an odd duck, well than I got one for you: the knob billed duck! How weird and cool does the male look? And their colours and spots on both of male