35 



cc. Bill not as above, but with the nostrils opening 

 beneath a soft swollen membrane. 



Tail of 12 feathers, Passenger Pigeon. 



Tail of 14 feathers. Mourning Dove. 



ccc. Bill and nostrils not as above, 

 d. Hind toe elevated above the front ones, 

 e. Gape of mouth not reaching below eye. 



Tail of 18 feathers, Ruffed Grouse. 



Tail of 12 feathers, Bobwhite. 



ee. Gape of mouth reaching below eye. 

 f. Length over 8 inches. 



Tail rounded, Whippoorwill. 



Tail slightly forked. Night Hawk. 



ff. Length under 6 inches. 



Length 5 inches, Chimney Swift. 



Length 3 inches, 



Ruhy-throated Humming-bird. 

 dd. Hind toe not elevated, 

 e. Primaries 10, outermost at least two-thirds as 

 long as longest, 

 f. Length over 8 inches. 



Pure white beneath, King-bird. 



Not white beneatli. 



Great Crested Flycatcher. 

 ff . Length 7 inches or less, 

 g. Length over Gk inches. 



Bill wholly black, Phoebe. 



Lower mandible not black. Wood Pewee. 

 gg. Length 6 inches or less. 



h. Throat yellow, Yellow-bellied Flycatcher. 

 hh. Throat white. 



Length 6 inches, Traill's Flycatcher. 



Length o| inches, Least Flycatcher. 



