FAMILY ANATIDiE. DUCKS, GEESE, AND SAVANS. 59 



FAMITA^ ANATID^. 



DUCKS, GEESE, AND SWANS. 

 SUBFAMILY MERGINiE. MERGANSERS. 

 Fish-eating Ducks having narrow bills with tooth-like serrations on 



edges; TAR8DS, SCIJTELLATE IN FRONT (TRANSVERSE SOALEs). 



Group 1. Wing, fi.50 to 8.50 inches long. See page (il. 

 Group 2. Wing. S..50 to 1'2 inches long. See page (i3. 



SUBFAMILY ANATIN^E. RIVER AND POND DUCKS. 



Ducks having hind toe without well developed, membraneous lobe or 

 FLAP ; tarsus, scutellate (transverse scales) in front. 



Group 1. Wing, 5 to 7. .50 inches long. See page 6.S. 



Group 2. Wing, 8 to 10 inclies long. See page 64. 



Section ]. Belly, white. See page 04. 



Section 2. Belly, not white. See page 64. 



Group 3. Wing, 10 to 14 inches long. See page 0.5. 



Section 1. Belly, white, or tinged with dusky or gray on lower part. See page 65. 



Section 2. Belly, not white. See page 66. 



SUBFAMILY FULIGULINTl^:. BAY AND SEA DUCKS. 



Ducks having a flap or membraneous lobe on hind toe; tarsus, scutellate 



(transverse scales) in front. 



Group 1. Wing, 5 to 0..50 inches long. See page 71. 



Section 1. Tail feathers, not stiff and pointed. See page 71. 

 Section 2. Tail feathers, stiff and pointed. See page 71. 

 Group 2. Wing, 0.50 to 7.50 inches long. See page 71. 

 Section 1. Belly, white. See page 71. 

 Section 2. Belly, not white. See page 72. 

 Group 3. Wing, 7..50 to 8. .50 inches long. See page 72. 



Section 1. Head, with more or less white or brownish white; belly, white, sometimes 



tinged with dusky or gray on lower part. See page 72. 

 Section 2. No white or grayish white on head; belly, white; sometimes tinged with 



grayish white on head. See page 73. 

 Section 3. Belly, not white. See page 73. 

 Group 4. Wing, 8..50 to 10 inches long. See page 74. 



Section 1. Hind toe, with fl.ap oi- lobe; belly, white, sometimes tinged on lower part 

 with dusky or gray; head, marked Willi more or less white, or brownish white. See 

 page 74. 



