122 Field Museum of Natural History — Zoology, Vol. IX. 



11 Bill, as illustrated ; throat, black; crown, 



j black and no rufous brown on sides (Chick- 

 adee ), or forehead, black; sides, with rufous 

 brown (Titmouse ) . 



Family PARID^. 

 Titmice and Chickadees. 

 See page 268. 



SECTION 2. First priniarv, not short, always more than half as 



long as third. 



PART 1. Tip of upper mandible, with small but distinct hook or notch. 



Bill, flattened and wide 

 at base; numerous black 

 bristles at base of bill; 

 back of tarsus, rounded; 

 wing, longer than tail. 



Family TYRANNIDiE. Flycatchers. 

 See page 1 70. 



Top of bill. Side of bill. 



Bill, very slightly hooked or notched at tip; not flattened at base, 

 as in the Flycatchers; toes, joined at base. Plain colored birds, 

 usually greenish or grayish, at times, with wash of yellow on under 

 parts; no white on tail. Family VIREONID^E. Vireos. 



See page 227. 



PART 2. Tip of upper mandible not notched or hooked. 



Toes, 4; nostrils, opening 



into a soft, fleshy membrane; 



tarsus, usually shorter than 



'if'"'" toes. \ 



Family COLUMBIDiE. 



Pigeons and Doves. 



See page 139. 



