musk duck

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An Australian duck (Biziura lobata), the male of which has a leathery chin lobe and emits a musky odor during the breeding season.

from The Century Dictionary.

• noun A duck, Cairina moschata, of the family Anatidæ and subfamily Anatinæ, commonly but erroneously known as the muscovy and Barbary duck.
• noun A duck of the genus Biziura, as B. lobata of Australia: so called from the musky odor of the male.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The Musk Duck (Biziura lobata), a highly aquatic, stiff-tailed duck native to southern Australia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun large crested wild duck of Central America and South America; widely domesticated