FAMILY HIRUNDINID/E. SWALLOWS. 



2(;: 



Group 2. Wing, 4.75 to 5.50 inches long. 



Male: General plumage fiiuludini; belly), bluish black, or dark steel blue. 

 Female: Back, like male; underparts, grayish brown, sluidhiir into dull 

 white on the lu-lly. Iinnintuie birds have the upper phiuiMijc, bro\vni-;b: under- 

 parts, brownish ou tiie breast ; dull white ou the bell\'. 



Purple Martin. 

 I'nii/ne sitbis. 

 See No. 450. 



%a^^--' 



Baek, steel bhn- ; belly, white. 



Tree Swallow. 

 White-bellied Swallow. 



Tachyciiiila bicohir. 

 See No. 4C2. 



