KEY TO THE AVATER JURDS ()|- ]-I.()RII)A. 



■63 



Hind toe with welhdefined membranous lobe. 

 Belly not white. 



Length, 21 ; Wing, 11 : Tarsus, 2.05 ; Bill. 1.50. Gen- 

 eral plumage black ; speculum white ; spot 

 under eye white; liill orange at base : feathers 

 on the bill bss than one half inch from nostril. 



Length, 20.50; Wing. 11 ; Tarsus, 2; Bill, 1.50. Gen- 

 eral plumage grayisli : speculum white ; feathers 

 on the bill less than one half inch from nostril. 



Length, iS ; Wing, 9.25; Bill, 1.75; Tarsus, 1.S5. 

 General plumage black ; no white on the wing ; 

 bill orange at ba.se : feathers on the bill more 

 than one half inch from nostril. 



Length, 17.50: Wing, 9: Bill. 1.70: Tarsus, i.So. 

 General plumage lirownish : no white on wing ; 

 bill black : feathers on the bill more than one 

 half inch from nostril. 



Length, 20; Wing, 9.50; Tarsus, 1.75; Bill, 1.50. 

 (ieneral plumage black; feathers on top of bill 

 extending farther forward than on side of bill ; 

 patch of white on bill ; orange, black, and white 

 front of head and nape : no white on wings ; 

 feathers on the bill less than one half inch 

 from nostril. 



Length, 19.50; Wing. 9.50; Tarsus, 1.75: Bill, 1.50. 

 Head brownish, showing a slight trace of whitish 

 on the sides ; under surface of body grayish ; 

 palest on the belly. Feathers extended on upper 

 part of bill more than on sides : no white on 

 wings ; feathers on the bill less than one half 

 inch from nostril. 



Oidemia deglandi (adult male). 

 White=winged Scoter. 

 White=winged Coot. 



See page 234 



Oidemia deglandi (male in 

 winter and female). 

 White=winged Scoter. 

 White=winged Coot. 



.See page 234 



Oidemia americana(adult male) 

 American Scoter. 

 Butter=bill, Coot. See page 233 



Oidemia americana ( female 

 and immature). 

 American Scoter. 

 Butter=bill, Coot. See page 2 



Oidemia perspicillata (^ adult 

 male). 

 Surf Scoter. 

 Skunk=head Coot. See page 235 



Oidemia perspicillata (female). 

 Surf Scoter. 

 Skunk-head Coot. See page 235 



