Anas undulata (Yellow Billed Duck) is a species of birds in the family Anatidae. They are associated with freshwater habitat. They are found in Afrotropics.
Definition: The largest scale biogeographic division of the earth's surface based on the historic and evolutionary distribution patterns of plants and animals.
Definition: A habitat that is in or on a body of water containing low concentrations of dissolved salts and other total dissolved solids (<0.5 grams dissolved salts per litre).
