GRAY TEAL 
ANAS GIBBERIFRONS S. Mulleh 
(Plate 34) 
Synonymy 
Anas (Mareca) gibberifrons S. Muller, Verhand. Land- en Volkenk., p. 159, 1839-44. 
Mareca gibberifrons G. R. Gray, Genera of Birds, vol. 3, p. 1(34, 1845. 
Querquedula gibberifrons Bonaparte, Compt. Rend. Acad. Sci. Paris, vol. 43, p. 650, 
1856. 
?Anas punctata, var., G. R. Gray, Proc. Zool. Soc. London, 1859, p. 166. 
Anas gibbifrons Wallace, Proc. Zool. Soc. London, 1863, p. 487. 
Anas muta S. Miiller,^de Schlegel, Mus. d’Hist. Nat. des Pays-Bas, Anseres, p. 58, 
1866. 
Anas gracilis Buller, Ibis, ser. 2, vol. 5, p. 41, 1869. 
Mareca castanea Marie {nec Eyton), Actes Soc. Linneenne de Bordeaux, vol. 27, 
p. 328, 1870. 
Nettion gibberifrons G. R. Gray, Hand-list Birds British Mus., vol. 3, p. 83, 1871. 
Anas (Virago) castanea Ramsay, Proc. Linn. Soc, New South Wales, vol. 2, p. 200, 
1877 (part). 
Virago gibberifrons White, South Austr. Ornith., vol. 1, p. 11, 1914. 
Additional synonymy under Geographical Races. 
Vernacular Names 
English: Slender Teal, Gray Teal, Wood Teal, Oceanic Teal, Mountain Teal. 
German: Weisskehlige Ente. 
Maori: Tete, Tete-moroiti, Pohoriki. 
DESCRIPTION 
Adult Male: Similar to the adult female of Anas castanea, and not certainly to be distinguished 
from that species, except by its smaller size. Probably nearly all old males have the characteristic 
bony protuberance on the forehead, but in a large series of twenty-eight males from Celebes in the 
United States National Museum, only six or eight are easily distinguished by this character. Anas 
castanea never has the bony protuberance. Many of these Celebes birds are darkly stained on the 
under parts and on the cheeks, but light-colored birds occur there, as well as in Java and Australia. 
There remains therefore only one test, and that is size. 
Iris brown. Upper mandible of a bluish lead-color, mottled with black; lower mandible with the 
basal half and tip of a lead-color, the rest of the terminal portion orange-yellow. Legs of an oliva- 
ceous-slate color (Ogilvie-Grant, 1910). 
Wing 175-206 mm. (according to Mathews); bill 36-39; tarsus 33-37. 
Weight: Keartland (1890) gives the weight of the Gray Teal as 2 pounds 3 ounces per pair, as 
