272 



WATER FOWL. 



KEY TO THE SPECIES. 



I. Head black, cheeks white. 



a. General color dark brown, under parts 

 light brownish gray, grading into white, 



■ no white collar at base of neck. 

 a'. Size large. Average total length about 

 39 inches. Tail feathers, 18-20. 



b'. Size small. Average total length about 

 29 inches. Tail feathers, 14-16. 



b. General plumage light brown, under 

 parts dark brownish gray, abruptly sep- 

 arated from white anal region. White 

 collar sometimes at base of neck. 



a'. Size large. Average total length about 

 35 inches. Tail feathers, 18-20. 



b'. Size small. Average total length about 

 24 inches. Tail feathers, 14-16. 



c. General plumage, bluish gray; 

 parts, grayish white. 



under 



S. Head and cheeks all black. 



a. White patch on middle of neck, com- 

 posed of streaks. 



b. Broad white collar on middle of neck, 

 interrupted behind. 



CANADA GOOSE. 



B. canadensis: 



HUTCHINS' 

 GOOSE. 



B. c. hutchinsi. 



WHITE-CHEEKED 

 GOOSE. 



B. c. occiden- 

 talis. 



CACKLING 

 GOOSE. 



B. c. minima. 



BARNACLE 

 GOOSE. 



B. leucopsis. 



BRANT GOOSE. 



B. bernicla. 



BLACK BRANT. 



B. nigricans. 



The specimen of Hutchins' Goose mentioned in the article on 

 that species as having been killed at Puckaway Lake, and now 

 in the New York Museum of Natural History, is rather peculiar 

 from the fact that while the under parts are light brownish gray, 

 grading into the white of the anal region, and in this respect 

 possessing the distinctive mark that separates its species and 

 the typical Canada Goose from their allies, there is also a narrow 

 white ring at the base of the neck; a character, at all events at 

 certain seasons of the year, of B. c. occidentalis and B. c. minima. 

 The style of the coloring on the under parts in the two divisions 



