FAMILY ANATID^E. DUCKS, GEESE, AND SWANS. 



79 



Top of head, black, divided ou orowii; more or less green (jii liead; tliroat, -vvliite; 

 axilhirs, wliite ; culmen, divided iiud pointed at base (mule). (See cut uf bill.) 



Somateria hufeaUs. Greenland Eider Duck. 



See No. n.o. 



Top of head, slate color; clieelis, greeuisli; tliroat, while, with laif;e, Ijlaek, V=shaped 

 mark (male). ,Soina!eria .^pectalnli.f. King Eider Duck. 



See No. 117. 



Section 2. Hind toe, with well defined membraneous lobe 

 or flap ; no white on head ; belly, black. 



General plumage, black ; axiUars, black; no white on wing; 



liill, oian"e at l)ase; feathers on bill, more than one hall inch 



// 

 // from nostril (inale). 



Oidemia americaitn. American Scoter. 



Black Coot. 



Butter-bill Coot. 



See No. 118. 



Section 3. Hind toe, with well defined membraneous lobe 

 or flap; head, marked with more or less white, or 

 grayish white; belly, mottled brown, or grayish brown, 

 or slaty. 



General plumage, brownish; no white on wing ; feathers 

 on bill, more than one half inch from nostril (female ami im- 

 mature). 



Ohleinia amrric^nifi. American Scoter. 

 Butter=bill Coot. 

 See No. 118. 



Oiilcuiia aiueiicana. 



General plumage, grayish brown ; speculum, white ; feathers on bill, less than one 



half inch from nostril (female ami immature). _ . ^„„,. 



Oidemia d,;ilandi. White-winged Scoter. White-winged Coot. 



See No. 120. 



General plumage, grayish brown ; leather, extending on upper part of bill more than on 



the sides; no white on . ing ; feathers on bill, less than one ^f '"^'^ ^■"""^ ""f '' '^ '"^'^^ ' 



' Oidemai.rrspicillata. Surf Scoter. Skunk=head Coot. 



See No. 121. 



