THE NATURAL HISTORY SURVEY. 43 



Jr., informs me that he observed a flock of thirteen of these ducks 

 in the Chicago harbor on May 25, 1895. Mr. E. W. Nelson 

 says:* "This is not an uncommon species upon the larger 

 marshes and inland lakes during the breeding season. * * * About 

 the time they leave for more northern breeding grounds they 

 congregate in very large flocks on rivers or small lakes, and soon 

 all have disappeared from these haunts and none,- except the com- 

 paratively few which remain to breed, are found there again until 

 they return in the autumn." This is the only record that I can 

 find of the breeding of the Lesser Scaup within our limits. 



The Lesser Scaup Duck breeds chiefly north of the United 

 States, but its geographical range includes the whole of North 

 America. 



Aythya collaris (Donovan). Ring-necked Duck. 



Anas collaris Donovan, Br. Birds, VI, 1£09, pi. 147. 



Fuligula collaris Bonaparte, List B. Europe, 18i2, 73. 



Aythya collaris Ridgway, Proc. U. S. Nat. Mus., VIII, 1885, 356. 



Popular synonyms: Einq-bili,. Black-head. Fall Duck. Bla.ce 

 Jack. Moon-bill. Bltje-bill. Ring-billed Shuffler. 



An abundant migrant, arriving from the south in March, and 

 returning from the north in September. This Duck frequents 

 the marshes of our area in large numbers, during its migrations, 

 and is often mistaken for the Lesser Scaup Duck. The only record 

 which I have found of its breeding within our borders, is that 

 of Mr. E. W. Nelson, who says:* "This species also breeds 

 about the marshes in northeastern Illinois, but in smaller num- 

 bers than the preceding." 



The range of the Ring-necked Duck includes the whole of 

 North America, and it breeds from Iowa, southern Wisconsin 

 and Maine northward. 



Genus CLANGULA Leach, 1819. 



Clangula clangula americana (Bonaparte). American Golden-eye. 



Anas clangula Wilson, Amer. Om., VIII, 1814, 62, pi. 67, fig. 5 (neo 

 Linnseus) . 



Fuligula clangula Bonaparte. Synopsis. 1838, 393. 



Clangula americana Bonaparte, Comp. List, 1888, 58. 



Bucephala clangula CouES. Key, 1872. 290. 



Bucephala clangula var. americana Ridgway. Orn. 40th Par., 1877, 626. 



Glaucionetta clangula americana Stejnegeb, Proc. U. S. National Mus., 

 VIII, 1885, 409. 



Clangula clangula americana Faxon, Auk, XIII, 1896, 215. 



Popular synonyms: Whistler. Whistle-wing. Great-head. Brass- 

 eye. Merry-wing. Coot. Iron-head. Cob-he.\d. 



*Birds of Northeastern Illinois, Bull, of the Essex Institute, Vol. VIII, 1876, 141. 



