FAMILY ANATID.E. DUCKS, GEESE, AND SAVANS. 59 



FAMILY AISTATIDTR. 



DLCKS, GEESE, AND SWANS. 



SUBFAMILY MERGINyE. MERGANSERS. 



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

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



Group 1. Wing, G. 50 to 8.50 iuches long. See page 61. 

 Group 2. Wiug. S..0O to 12 inches long. .See page G3. 



SUBFAMILY ANATINiE. RIVER AND ROND DUCKS. 



Ducks havincj hind toe without well developed, membraneous lobe or 

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



Group 1. AViug, 5 to 7.50 inches long. See page 63. 



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



Section 1. Belly, white. See page 64. 



Section 2. Bell}', not white. See page 64. 



Group 3. Wing, 10 to 14 inches long. See page 65. 



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



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



SUBFAMILY FULIGULINiE. BAY AND SEA DUCKS. 



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



(transverse scales) in front. 



Group 1. \Ving, 5 to (>.50 inches long. See page 71. 



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

 Section 2. Tail feathers, still 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 while; lit-lly, wiiit<', «>nii'linies 



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

 Section 2. No white or grayish white on head; l)elly, wliite; sonietinirs ling.-d witli 



grayish white on head. See page 73. 

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

 Group 4. Wing, S.50 to lO inches long. See page 74. 



Section 1. Hind loc, with llap or lobe; belly, while, sonietinies tinged .mi lower part 

 with dusky or gray ; head, lunrkcd with more or /(■*•< irhite, or brownish white See 

 page 74. 



