426 



Key to Plate No. 19 Plate No. 19 



WINTER PLUMAGES 



(A) GREATER SCAUP DUCK, adult male. 



(B) GREATER SCAUP DUCK, adult male wing. 



(C) GREATER SCAUP DUCK, adult female. 



(D) GREATER SCAUP DUCK, adult female wing. 



Chief distinguishing features of GREATER SCAUP DUCK: Same as for 

 Lesser Scaup (below) except (a) head of male glossed with greenish, (b) 

 white area on wings of both sexes extends far into primary feathers, (c) 

 bill, see text. 



(E) LESSER SCAUP DUCK, adult male. 



(F) LESSER SCAUP DUCK, adult male wing. 



(G) LESSER SCAUP DUCK, adult female. 



(H) LESSER SCAUP DUCK, adult female wing 



Chief distinguishing features of LESSER SCAUP DUCK: MALE, (a) 

 Hind toe with lobe, (b) solidly black head glossed with purplish; black 

 neck, chest and foreback, (c) white speculum, but no white on primaries, 

 though three inner ones may be palish. FEMALE, (a) Hind toe with lobe, 

 (b) white area across face at base of bill, (c) white speculum, but no white 

 on primaries, though three inner ones may be palish. 



Autumn Plumages, Plate No. 17. 

 Downy Young, Plate No. 34. 



Text : Greater Scaup Duck, page 248 ; Lesser Scaup Duck, page 252. 



