FAMILY ANAT'ID.Ii;. DUCKS, GEKSE, AND SWANW. 83 



Section 2. Bill and feet, pink or flesh color in life ; head, 

 white, sometimes tinged with brownish orange. 



Entire plumage, white; primaries, black; smaller thuu C. h. nivalis; 1,111, over 1. 90; 

 tarsus, over 2.,S0; middle toe, over 2.10 (adult). Chiefly Pacific coast tu Mississii,],! Valley, 

 rare on Atlantic coast. Chen Ivjperborea.. Lesser Snow Qoose. 



See N(i. 12-1. 



Entire plumage, white; primaries, black; resembles precediujT species Imt is lari;er 

 (adult). Eastern North America, south in winter on Atlantic coast lo Florid.i and ( uha. 



Chen hypr-rljnren nivalis. Greater Snow Qoose. 



See Xo. 12.5. 



Back, slaty brown ; belly autl rump, gray ; the featheis, not barred ; tei-niinal half of tail, 

 not white (adult). . Chen cicrnlfsrens. Blue Goose. 



See No. 12G. 



Section 3. Bill, pinkish ; feet, yellow or pink ; head, 

 brownish or grayish, sometimes marked with white. 



Forehead and feathers at base of bill, white; nail of bill (unguis), whitish; bill, 

 yellowish in dried skin; l)reast, grayish, more or less marked or sp(jtted with black (adult). 



Anser alhifrons r/amheli. American White Fronted Goose. 



See No. 12s. 



No white on forehead or base of bill ; bill, yellowish in dried skin ; nail of bill ( unguis), 



dusky ; rump, slaty lu'own; wing coverts, edged with white (immature). 



Anser albifrons ijarnlteU. American White Fronted Goose. 



See No. 128. 



General plumage, grayish; rump, white; suiidler than C. h-. nivalis; bill, over 1.90; 

 tarsus, o\er 2. SO ; midiUe toe, over 2.10 (immature). Chielly Pacific coast to Mississippi \'alley : 

 rare on Atlantic coast. Chni huperburea. Lesser Snow Goose. 



See Xo. 124. 



General plumage, grayish; rump, white; larger than (kckZw. i immatui-(;). Eastern 

 North America, south in winter to F'lorida and <'uba. 



Chen hyperborea nivalis Greater Snow Goose. 



See No. 125. 



Head, brownish gray; chin, white; rump, gray; unguis (nail of bill), yellow; wing 

 coverts, <Trayish, showing very little white on the edge of the feathers (iunnature). 



Chen cwntlesceiis. Blue Goose. 

 See No. 126- 



