FAMILY IIIRUNDINID.T:. — SWALLOWS. 



207 



Group 2, Wing, 4.75 to 5.50 inches long. 



Male: General plumage (^iucluding belly), bluish black, or dark steel blue. 



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

 white on tlie hellj-. Immature birds have the upper plun)a<;e, l)rowni>;h: under- 

 parts, brownish on tlie breast; dull white on the belly. 



Purple Martin. 



Proyne suhis. 

 See Xo. 456. 



Back, steel blue; belly, white. 



Tree Swallow. 

 White=beilied Swallow. 



Tachycineta bicolur. 

 See Xo. 462. 



_. . V 



