110 KEY TO FAMILIES OF LAND BIRDS 



f^, 2. Bill long, cutting' edges smooth Cuculidee : 



3 Road-runners, Cuckoos, etc., p. 193. 



Fig. 140. 



2.' Bill short, cutting edge toothed. Trogonidae : 



Trogons, p. 197. 



ORDER PICI: WOODPECKERS. 



Toes 3 or 4, only 2 in front ; 

 hill chisel-like ; tail fea- 

 thers stiff and pointed. 



Picidae : 

 Woodpeckers, p. 200. 



Fig. 143. Fig. 144. 



Fig. 142. 



ORDER MACROCHIRES: GOATSUCKERS, 

 SWIFTS, AND HUMMINGBIRDS. 



^''^'T^X 1. Bill long and slender, gape not deeply cleft. Trochilidae : 

 ^.J"^ Hummingbirds, p. 232. 



-^^c 1'. Bill short, wide at hase, gape deeply cleft. 



Fig. 146. 



2. Plumage moth-like, lax ; middle toe long, and 

 inner edge toothed . Caprimulgidse : 



Goatsuckers, p. 222. Fig. 147. 



2'. Plumage compact, middle toe normal, not 



toothed Micrcpodidae : ''^:^^ 



Swifts, p. 229. 



Fig. 148. 



ORDER PASSERES: PERCHING BIRDS. 



Toes 4, 3 pointing forward, 1 hack ; \^ all on the same level and 



never united for half their length. 



Fig. 149. 



1. Inner toe with hasal phalanx united to that of middle toe. 



Cotingidae : Cotingas, p. 245. 

 1'. Inner toe with hasal phalanx not united to that of middle toe. 

 2. Back of tarsus rounded. 



>rv /^^^^^^ '^' IIii^<^ claw longer than its toe and straight; 



UV ^^ & . ^j^j rounded, not hooked at tip. 



* i ^ Alaudidse : Larks, p. 265. 

 Fig. 150. Fig. 161. 



