WHITE-TAILED EAGLE. 
537 
particularly indebted for sending- us both sexes of Anas nyroca^ for 
examination. From the information of this accurate naturalist, this 
bird appears to be not so uncommon in the London market, as might 
be expected. Since it has been considered as British, seven or eight 
have been examined by Mr. Foljambe, several of which were fresh, 
and varying a good deal in plumage ; some having no white either 
in the wings or under parts of the body : these were probably young- 
birds. 
The weight of the female was about thirty-six ounces ; length 
eighteen inches ; breadth the same. The male described above weighed 
thirty-three ounces and three-quarters, and measured in length sixteen 
inches and a half. 
There is very little difference in plumage between the male specimen 
belonging to Mr. Foljambe, and that in our collection ; but being in 
better feather, it is observable that on the lower part of the neck, the 
fine chestnut colour is interrupted by a dusky ferruginous collar, which, 
passing behind, becomes blended and uniform with the colour of the 
back ; from the vent to the tail-feathers pure white ; the rump and 
upper tail-coverts dusky black, coming down on the sides in the 
line of the vent, forming a strong contrast with the white feathers be- 
neath. 
The female very much resembles the other sex in plumage, but the 
colours are not quite so strong, especially the chestnut on the breast, and 
the white beneath is not so pure ; the white on the chin is not so ex- 
tended, nor is there any black that borders the white on the sides be- 
hind the vent ; the legs, as well as the toes, are paler. The irides of 
both sexes are yellow. 
This species belongs to the diving family of ducks, all of which 
have short wings that scarcely reach beyond the base of the tail when 
closed. * 
WHITE SAND DUCK. — A name for the female Scaup Duck. 
WHITE FALCON. — A name for the Jer Falcon. 
WHITE FINCH. — A name for the Chaffinch. 
WHITE-FRONTED GOOSE. — A name for the Laughing Goose. 
WHITE-HEADED HARPY. — A name for the Moor Buzzard, 
WHITE OWL. — A name for the Barn Owl. 
WHITE PARTRIDGE. — A name for the Ptarmigan. 
WHITE SPOONBILL. — A name for the Spoonbill. 
WHITE STORK. — A name for the Stork. 
WHITE TAIL. — A name for the Wheatear. 
WHITE-TAILED EAGLE. — A name for the Eagle. 
