378 BIRDS. 
New Holland. The edges of its upper mandible are extended on 
each side into a membranous appendage. 
TaDORNA*. 
The bill very much flattened towards the end, and bulging into a 
salient lump at its base. 
An. tadorna, L.; Enl. 53; Frisch, 166; Naum. I, c. 55, f. 108 
and. 104. (The Shieldrake). The most highly coloured of all the 
European Ducks: white; the head green; a cinnamon-coloured 
cincture round the breast; the wing varied with black, white, red, 
and green. Common on the shores of the North Sea, and of the 
Baltic, where it builds its nest in the downs, and frequently in holes 
abandoned by rabbits. Its bifurcation is inflated into two nearly 
similar osseous capsules. 
Some Ducks of this second division have some naked parts about the 
head, and very often a lump on the base of the bill. 
An. moschata, L., Enl. 989, commonly but improperly called 
The Muscovy Duck (Le Canard de Barbarie); originally from South 
America, where it is still found in its wild state, and where it perches 
on trees; is now very common in our poultry yards, where it mixes 
with the Common Duck. Its capsule is very large, circular, verti- 
cally flattened, and all on the left side. 
Some of them have pointed tails. 
An. acuta, L.; Le Pilet, Enl. 954; Wils. VIII, xviii; Frisch, 
160 and 168; Naum. 51, f. 74 and 75. (The Pintail). Ash-~co- 
loured above and on the flanks, finely striped with black; white be- 
neath; the head tawny, &c. The capsule of the trachea is small. 
The males of others have some of the feathers of the tail recurved. 
An. boschas, L.{; Enl. 776, 777; Wils. VIII, lxx, 7; Frisch, 
158 and 159. (The Mallard). Is known by its pale yellow feet, 
yellow bill, the beautiful changeable green of the head, and rump of 
the male, &c. In our poultry-yards it varies in colour, like all 
other domestic animals. The wild breed is common in the marshes; 
it builds among the reeds, in the hollow trunks of willows, and 
sometimes upon trees. Its trachea terminates below, in a large 
osseous capsule. 
A singular variety is found in the Hook-billed Duck, the An. 
adunca, L. 
Some of them have a crested head, and a bill somewhat more narrow 
at the end, which, though foreign, are reared in all the aviaries of Europe. 
Such are, 
An. galericulata, L.; Enl. 980 and 981; Vieill. Gal. 287. (The 
Chinese Duck). The female of which has the wing feathers widened, 
turned up vertically. 
* Tadorne, the name of this bird in Bélon. Buffon, following Turner, mistook it 
for the Chenalopex of the ancients.—See above, the Oie d’ Egypte. 
+ Boscas, Greek name of the Mallard. 
