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http://en.wikipedia.org/wiki/Knob-billed_Duck
Duck with knob bill and greenish Iridescence in its wings..
The male has a knob(more like a satellite dish) on his upper bill during ...
During breeding season, the male exhibits what looks like a small satellite ...
Is an unusual, pan-tropical duck. It is the only known species of the genus ...
vagrant on Trinidad.
It is the only known species of the genus
vagrant on Trinidad. It is the only known species of the genus
Adults have a white head freckled with dark spots, and a pure white neck and ...
White head freckled with dark spot. Non-speckled white neck and underparts. The ...
This common species is unmistakable. It is one of the largest species of duck. ...
The comb duck is so called because the male has a round knob on top of the ...
It is one of the largest species of duck. Length can range from 56 to 76 cm (22 ...
It is one of the largest species of duck. Length can range from 56 to 76 cm ...
The Comb Ducks have a black bill with a comb on two-thirds of it. The comb is ...