DIBKCTORY TO BIRDS OF EASTERN NORTH AMERICA. 141 



2. LESSER SNOW GOOSE, C. hyperborea. 25.00; 

 white ; primaries, black, fig. 170. Breeds in Alaska ; migrates 

 south in winter to southern 111. and southern Cal; casual in 

 N. E. 



2*. GREATER SNOW GOOSE, C. h. nivalis. Differs 

 from 2 in being larger, 35.00. Breeds on the eastern coast of 

 Hudson Bay ; migrates south in winter very rarely to N. E. 

 and southward as far as Cuba ; rare in U. S. 



b. Gray Geese. Aiiser. 



Large gray geese with both upper and under tail coverts 

 white, and tail tipped with white. 



1. AMERICAN WHITE-FRONTED GOOSE, A. gambeli. 

 30.00; bluish-gray above, brownish on head and neck; fore- 

 head, white; grayish-white beneath irregularly spotted on 

 breast with black, fig. 171. Breeds far north in N. A., mi- 

 grating south in Oct. to winter in abundance in the south- 

 west as far south as Mexico ; return north in March ; rare on 

 the Atlantic coast but occurs as far south as Cuba. 

 Fig. 170. Fig. 171. 



IV, E, a, 2. 1-18. JV, E, b, 1. 1-4. 



2. WHITE-FRONTED GOOSE, A. ALBiFRONS. A little 

 smaller than 1 and with a considerably smaller bill. North- 

 ern parts of eastern hemisphere; accidental in Greenland. 



3. BEAN GOOSE, A. fabalis. Differs from 1 in the 

 absence of white on forehead and dark mottling beneath. 

 Northern portions of eastern hemispherp ; accidental in 

 Greenland. 



