goslet

from The Century Dictionary.

• noun A very small goose of the genus Nettapus, about as large as a teal, of which there are several species in India, South Africa, Australia, etc.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) One of several species of pygmy geese, of the genus Nettepus. They are about the size of a teal, and inhabit Africa, India, and Australia.

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

• noun A pygmy goose of the genus Nettepus.