308 APPENDIX. 
Brack Duck. 
Dusky Duck. 
Anas Obscura, Wils. 
Specific Character.— General plumage dusky; 
speculum green, reflecting purple, bordered with 
black; secondaries tipped with white. Adult with 
the forehead, crown, occiput, and middle space on 
the hind neck brownish-black, the feathers slightly 
margined with greyish-brown; cheeks, loral space, 
and sides of the neck dusky grey, streaked with 
black ; throat reddish-brown ; general plumage dusky, 
lighter beneath; under wing-coverts white ; specu; 
lum brilliant green; bill yellowish; feet reddish- 
orange. Female rather smaller, plumage lighter, 
speculum less brilliant. Length of male about two 
feet ; wing eleven inches. 
These ducks are killed equally in the fresh and 
salt waters; they come to the decoys warily. 
GADWALL. 
Welsh Drake, German Duck. 
Anas Strepera, Wils. 
Specific Character—Speculum white ; secondary 
coverts black; upper wing-coverts chestnut red; 
general plumage dusky grey, waved with white; 
abdomen white. Adult with the bill bluish-black ; 
head and upper part of the neck grey, streaked with 
dusky—darkest on the upper part of the head, as 
well as the middle space on the hind neck; lower 
