FAMILY ANATID.K. DUCKS, GEESE, AND SWANS. 



63 



* Group 2. Wing, from 8.50 to 12 inches long. 

 Section 1. Bill, narrow, with tooth=like serrations. 



Distaueo fioiu uostril to tip of bill, less than 1.50 ; lieud 

 aud neck, greenish black ; uuderparts, creamy white, tiuged 

 with sahnou color; feet, i-ed (inale). 



Merganser americann. American Merganser. Sheldrake. 



See No. 86. 



Distance from uostril to tip of bill, less than 1 .50 ; head, 



rufous brown ; upper tliroat, white ; feet, orange red (female). 



Merganser americaiia. American flerganser. Sheldrake. 



tjee No. 86. 



Top of Itill. 

 Merganser uinerioaiia. 



Distance from nostril to tip of bill, more than 1.50; head, 

 black, tinged with green ; breast, i-ufous, sti-eaked witii black 

 (male). Merrjnnscr serrator. Red-breasted flerganser. 



See No. 87. 



IMergaiieer serrator. 



Distance from nostril to tip of bill, more than 1.50 ; head, brownish, palest on the 

 throat; speculum, white (female). Merganser serrator. Red=breasted Herganser. 



See No. 87. 



SUBFAMILY ANATIN/E. 

 River and Pond Ducks. 



Ducks having hind toe without membraneous 

 lobe or flap ; tarsus, scutellate in front. 



* Group 1. Wing, 5 to 7.50 inches long. 

 Section 1, Hind toe, without flap or lobe. 



Large patch pale blue on wing (coverts) ; 

 white crescent on face (inale) ; no wliite 

 crescent, face speckled ; chin whitish (fe- 

 male). Common in Eastern United States. 



Anas discars. Blue-winged Teal. 



Alias disrors. See No. 07. 



Large patch of pale blue on wing (coverts) ; head and lireast, rufous lirowu; crown, 



For directions fur measurement, see page 9. 



