50 CHECK-LIST OF NORTH AMERICAN BIRDS. 



Subfamily NYROCINAE. Diving Ducks. 



Genus NYROCA Fleming. 



Nyroca Fleming, Philos. Zool., II, 1822, 260. T^T^, by tautonymy, 

 Anas nyroca Gijldenstadt. 



Subgenus NYROCA Fleming. 



Nyroca americana (Eyton). Redhead. [146.] 



Fuligula americana Eyton, Monogr. Anatidae, 1838, 155. (North Amer- 

 ica.) 



Range. — Breeds from southern British Columbia, northern Alberta, Great 

 Slave Lake, southern Saskatchewan, and southern Manitoba to southeastern 

 Michigan, southern Wisconsin, southern Minnesota, central Nebraska, 

 southern Colorado, northwestern New Mexico, southwestern Utah, central 

 Nevada, and southern California. Winters from southern British Columbia 

 to the coast of Mexico, and from northeastern Colorado, northern Arkansas, 

 southern Illinois, and Chesapeake Bay to the Bahamas, West Indies, and cen- 

 tral western Mexico, more rarely north to Lake Erie and southern New Eng- 

 land. Casual on Kodiak Island, Alaska. 



• Nyroca ferina (Linnaeus). Pochard. [146.1.] 



Anas ferina Linnaeus, Syst. Nat., ed. 10, I, 1758, 126. (in Europae 

 maritimis = Sweden.) 



Range. — Breeds in Subarctic portions of Scandinavia, Finland, and Russia 

 east to Siberia (Lake Baikal), and south to the British Isles, Persia, northern Al- 

 geria, and southern Spain. Winters from the Mediterranean basin to India, 

 China, and Japan. Casual in Iceland, the Faroes, Azores, Canaries, Com- 

 mander Islands and Pribilof Islands (St. Paul Island, May 4, 1912) .i 



Nyroca collaris (Donovan). Ring-necked Duck. [150.] 



Anas collaris Donovan, Brit. Birds, VI, 1809, pi. 147. (Lincolnshire (?), 

 England. Found in Leadenhall market, London.) 



Range. — Breeds from central British Columbia, Alberta, Saskatchewan, 

 Manitoba and western Ontario south to southern Wisconsin, northern 

 Iowa, northern Nebraska, northern Utah, and central Arizona; formerly, at 

 least, to northern Illinois. Winters from southern British Columbia down 

 the Pacific coast to Mexico and from northern Arkansas, the Ohio Valley, and 

 Chesapeake Bay to the Bahamas, Mexico, and Guatemala; rarely in Porto 

 Rico, Cuba, and Massachusetts. Casual in Bermuda and Nova Scotia. 



1 Evermann, Auk, 1913, 17. 



