Comb Duck (American)

or Knob-billed duck ( Sarkidiomis sylvicola ).

 

I saw this rather unusual duck at the Slimbridge Wetland Centre , Gloucestershire , England. Its normal habitat is in the tropical wetlands of South America . The fleshy appendage (knob) is only on the male bird & can become larger during the mating season !!!!!

Click on image to enlarge.

Done