268 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Back, steel blue: underparts, ciuuamon brown; tail, very deeply forked. 



Barn Swallow. 



Chelidon er>/throgastra. 

 866^0.461. 



General plumage, sooty brown ; showing 

 a faint greenish tinge on the upper parts ; 

 throat, ashj^ wliite; tail feathers, with 

 sharp spines, or points formed bj'^ the 

 shafts of the feathers, extending beyond 

 the webs. The swifts belong to the 

 Famil}' Micropodidie and are widely sepa- 

 rated generically from tlie swallows ; but 

 persons unfamiliar witli birds miglit look 

 for them under the same family. 



Chimney Swift. 



GluKtura pelayicn. 



See No. 340. 



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