80 KEY TO THE BIltDS OF EASTERN NOHTH AMERICA. 



Section 4. Hind toe, with well defined membraneous lobe 

 or flap ; no white on head ; belly, mottled brown, or 

 grayish brown. 



General plumage, brownish; no white on wiugs; axillars, 

 black ; feathers on the bill, more than one half inch from 

 nostril (feiiitile). 



Oidcraia americami. American Scoter. 

 Butter-bill Coot. 

 Gray Coot. 

 See Xo. 118. 



Head, (h\rk brown or hlaek ; feathers on bill, less than one half inch from nostril; 

 axillars, black ; no white on wings (iiniuminr mali). 



Okkmia iKi-fjiicillKtij. Surf Scoter. Skunk=head Coot, 



See No. 121. 



A patch of white on tlie wings; liacl; and upper parts, dark brown; leatliers on tlie base 

 ol liill, extending to within (jue lialf ineli of nostril (female). 



Oidemia ihyjlnndi. White-winged Scoter. 

 See No. I'JO. 



Head, tawny, streal^ed witli bicjwn ; axillars, white, or grayish white ; tlu-oat, streaked; 

 feathers on bill, within one fourth inch from nostril ; decided difference in bill from 

 next species (femalej. (See cut.) Eastern Nortli America. 



Siiiiiaterid drrsseri. American Eider Duck. 



Sec Xo. 116. 



Head, tawny, streaked witli brown; axillars, white, or grayish white; tljroat, 

 streaked; featheis on bill, within one fourth inch from nostril ; decided difference in bill 



from preceding species (fennile). (^See cut.) Eastern Noi'th Araei-ica. 



Somalerin hi)rcalis. Northern Eider Duck. 



SiM' No. 1 1.5. 



Head, tawny, streaked witli limun; axillars, white, or grayish white; throat, not 

 stnaknl ; feathers on bill, more than one fourth inch from nostril (bniale). 



Homateria spixLiibiUa. King Eider Duck. 

 See No. 117. 



