Ducks have evolved a specialized set of physical attributes allowing them to become some of nature’s most efficient waterfowl. So, what’s the bill for all that?
Domestic Crested Ducks
(images via: bobistraveling and

Ducks have evolved a specialized set of physical attributes allowing them to become some of nature’s most efficient waterfowl. So, what’s the bill for all that?
(images via: bobistraveling and