Jan., 1909. Birds of Illinois and Wisconsin — Cory. 



169 



Family MICROPODIDiE. Swifts. 



Bill, small and weak; mouth, large; feet, small; tail feathers, 

 with sharp spines extending beyond the tips. 



General plumage, sooty brown, showing a faint greenish tinge on 

 the upper parts; throat, ashy white; tail feathers, with sharp spines, 



or points formed by the shafts of the feathers, extending beyond the 

 webs. The Swifts are widely separated generically from the Swallows ; 

 but persons unfamiliar with birds might look for them under the same 

 family. Chcetura pelagica. 



Chimney Swift. 

 See No. 201. 



Family TROCHILIDtE. Hummingbirds. 



Smallest of Birds. Wing less than 1.75 inches long (carpus to tip). 



Throat, ruby red; back, golden green (male); no red on throat 

 (female and young male). Trochilus colubris. 



Ruby-throated Hummingbird. 

 See No. 202. 



