306 APPENDIX. 
Tur WuitkE SwaAN. 
American Swan. 
Cygnus Americanus, Aud. 
Specific Character—Plumage, pure white; bill 
and feet black; length of the specimen before us, 
four feet; wing twenty-one and a half inches. 
These magnificent birds, the most majestic of the 
game-birds of our continent, are rarely shot to the 
northward and eastward of Chesapeake bay, but 
are much more abundant in the far West—even to 
and beyond the Rocky Mountains. 
FrRrEsH-W ATER DvwuckKs. 
Genus Anas, Linn. 
Generic Distinctions.—Bill higher than broad at 
the base, widening towards the end, and about the 
same length as the head; the upper mandible with a 
slight nail at the end; neck rather long ; body full; 
wings moderate, pointed ; feet short, stout, and placed 
behind the centre of the body; walks with a wad- 
dling gait; hind toe furnished with a narrow mem- 
brane. 
MALLARD. 
Green Head, English Duck, Grey Duck (female), the 
Duck, the Wild Duck. 
Anas Boschas, Wils. 
Specific Character.—Speculum bright purple, re- 
flecting green, bordered with black; secondaries 
