404 



Key to Plate No. 8 



Plate No. 



(A) COMMON MALLARD, adult female. (Repeated for comparison.) 



(B) COMMON MALLARD, adult wing. (Repeated for comparison.) 



(C) NEW MEXICAN DUCK, adult male. Sexes similar. 



(D) NEW MEXICAN DUCK, adult male wing (that of female similar). 



(E) NEW MEXICAN DUCK, adult female bill. 



Chief distinguishing features of NEW MEXICAN DUCK: MALE, (a) 

 Hind toe without lobe, (b) speculum, bordered in front and behind with 

 black and white bars; white bar in front may be mixed with dusky or 

 buff, (c) bill and nail, greenish yellow, (d) darker in coloration than fe- 

 male Mallard, and more heavily marked below, (e) breast-feathers, see 

 text. FEMALE. As above except (c) bill, dusky on ridge, brilliant yellow 

 on sides, with black nail, (e) breast-feathers, see text. 



F) FLORIDA DUCK, adult. Sexes alike. 

 (G) FLORIDA DUCK, adult female bill. 

 (H) MOTTLED DUCK, adult. Sexes alike. 



(J) Wing of FLORIDA and MOTTLED DUCKS. 



Chief distinguishing features of FLORIDA DUCK: BOTH SEXES, (a) 

 Hind toe without lobe, (b) speculum variable, bordered in front and be- 

 hind with black bars, and often narrowly behind with white, (c) chin and 

 throat, pale buffy without streaks, (d) bill of male, bright yellow or yel- 

 low orange, nail and line along base of ridge and spot at base of bill, 

 black; bill of female, dull orange, with blackish spots, and black spot at 

 base, (e) broad paler edges to feathers of back, (f) feet, brilliant orange 

 to orange red, duller and more orange in female. 



Chief distinguishing features of MOTTLED DUCK: BOTH SEXES. Simi- 

 lar to the Florida Duck except the chin, cheek and throat are more heavily 

 streaked, and entire plumage is darker in tone. 



Downy Young, Plate No. 33. 



Text : New Mexican Duck, page 157 ; Florida Duck, page 170 ; Mottled 

 Duck, page 173. 



