CLASS-BOOK OF ZOOLOGY. 85 



ored, mixed with black, on the head and neck reddish- 

 brown. It is found in immense flocks in the creeks and 

 ponds of the Chesapeake Bay, in the months of November 

 and December. 



§ 362. The Canvass-back feeds principally on the roots 

 of the Tape-grass, (Vallisneria,) a water-plant about eight 

 feet long, and which is found in the creeks and ponds of 

 the Chesapeake Bay in great abundance. The- flesh of 

 this duck is considered such a luxury, that in the markets 

 of Philadelphia and New York a single pair brings from 

 one to three dollars. 



QUESTIONS ON SECT. XLX. 



§ 350. What are Swimming Birds? 



§ 351. Where do they live, on what do they ijeed, and what is their 

 use? 

 § 352. Name some of them. 



§ 353. What is the size, color, and native country of the Silver Gull ? 

 § 354. Where is it frequently seen, and why ? 

 § 355. Describe the peculiarity in regard to then- sleeping. 

 § 356. Describe the Pelican. 

 § 357. For what was it formerly celebrated? 

 § 358. Describe the Goose. 

 § 359. What use is and can be made of it ? 

 § 360. What use do they make of it in Riga and Strasburg? 

 § 361. Describe the Canvass-back. 

 § 362. On what does it feed, and what is its use? 



List of Birds found in the State of New York, and 



DESCRIBED BY DOCTOR JAMES E. De KAY, IN HIS 



Zoology of New York. 



