BRONZE-WINGED DUCK 
ANAS SPECULARIS King 
(Plate 26) 
Synonymy 
Anas specularis King, Zoological Journ,, vol. 4, p. 98, 1828. 
Anas chalcoptera Kittlitz, Mem. Acad. Imp. Sci. St. Petersbourg, vol. 2, p. 471, 1835. 
Vernacular Names 
English: White-faced Duck, White-marked Duck, Bronze-winged Teal or Duek. 
Spanish: Pato anteojillo, Pato de las cordilleras, Pato perro, Pato del rio, Pato del 
estero. 
DESCRIPTION 
Adult Male: Head and neck dark brown, with a large patch between the eye and the bill white, 
and another large patch on the sides of the neck extending forward along throat and chin. This 
face-pattern shows considerable variation. Mantle dark brown, with lighter edges to the feathers; 
scapulars nearly black; whole under surface very similar to that of Anas cristata but the flank 
feathers differ in having large black spots. Lesser wing-coverts purplish black; a speculum, formed 
by nearly the whole length of the secondaries, bronzy green to copper color, bordered posteriorly by 
a black and a white band; primaries dark brown. Tertials purple-black; back, rump, upper tail- 
coverts and tail dark brown; under tail-coverts darker than abdomen. 
Iris black. Bill slate, almost plumbeous. Legs and feet orange; claws black at tips, webs blackish 
(Lane, 1897). 
Wing 267 mm.; bill 46; tarsus 45. 
Female: Similar to the male but duller (Salvador!, 1895). 
Young in Down: Upper parts brown; under parts, sides of the head, a band on the posterior edge of 
the wing joining another on the sides of the back, and a spot on each side of the rump whitish; a 
brown band from the eye to the occiput, and a second one across the cheeks (Salvador!). This ap- 
pears to be typical for the genus, but without a specimen it is not easy to judge. 
DISTRIBUTION 
The known range of this duck has recently been considerably extended. It is primarily an Andean 
bird, resident in the central and southern parts of that chain. Schlegel (1866) lists a specimen in the 
Leyden Museum said to have been collected by D’Orbigny in Bolivia. In Chile the northernmost 
record seems to be that for Colchagua (L. Fraser, 1843). There are two specimens from Temuco, 
ChUe, in the British Museum, taken in April, 1910, and this must be near the northern limit of the 
range. Philippi (1868) gives Valdivia as the northern limit of its regular range and speaks of it as a 
rare bird in central Chile. Mr. Blaauw writes me that he saw it in 1911 on the edge of a stream that 
flowed into Lago Todos los Santos in central Chile. Lane (1897) has reported it from Rio Bueno and 
