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turns to the warmer parts of the continent. In its migratory course, 

 it is frequently met with in the Middle Atlantic Districts, and is quite 

 common on the Chesapeake Bay during- winter. Two species arc 

 known to inhabit this continent — the present, [Cygnus Americanus,] 

 and the Trumpeter Swan. [Cygnus B icinator.] The latter differs 

 from the former by being superior in size, as well as in its anatomi- 

 cal structure. These species were separated by Mr. Sharpless, who 

 decided this point from his knowledge of comparative anatomy. 



This elegant bird is frequently domesticated, and by its spotless 

 plumage, and graceful movements when on its native element, fails 

 not to attract the attention cf the pr.sser by. The young are highly- 

 esteemed for the table. 



The pressnt species is the only one which I have ever known to 

 be seen in this vicinity. 



GENUS ANAS — LINN. 

 FRESH WATER DUCK. 



[Gill higher than broad nt the base, widening toward ilic end, and about tho 

 sa'iic long'h as the head - the upper maiulildc with a slight nail at the rnd ; neck 

 rather Imig— body (til! — win»s moderate pointed ; feet short, stout, and placed 

 behind tho centre of the body — walks uiih a waddling gait— hind toe furnished 

 with a narrow membrane.] 



ANAS BOSCHAS— LINN. 



MALLARD. 



Mallard, Anas B»seha3, Wils. Amcr. Orn. 

 Anas Boschas, 13.j;;ap. Syn. 



Anas ( BiMclias) domestica. Mallard. Sw. &. Rich. 

 Millard Duck, Anas domcslic.i, NiHt. Man. 

 Mdliard, Ana, Bu.-chas, Aud. Orn. Biog. 



Specific Character — Speculum bright purple, reflecting green, 

 bordered witn black; secondaries broadly tipped with white ; se- 

 condary coverts toward their ends white, broadly tipped with black. 

 Adult male with the entire head and upper part of the neck bright 

 o-reen, with a few touches of reddish-brown passing from the fore- 

 head on the occiput ; middle of the neck with a white ring; the 



