BANK SWALLOW 



cc. Rump dull white, general color grayish brown, 



reddish buff on throat 



Stelgidopteryx ruficollis uropygialis 



bb. Rump cinnamon buff. Back mostly gray to 

 blue black, throat fawn color, chest grayish 

 brown Petrochelidon lunifrons tachina 



i. Riparia riparia (Linnaeus) 

 Bank Swallow 



Sexes alike. Length 119 mm. (4.70. in.); 

 tail 50 mm. (2.00 in.). Above grayish brown, 

 crown darker, rump very slightly paler; tinder 

 parts including cheeks white, a broad band of 

 grayish brown crossing chest and extending 

 down sides. 



Young. Similar to adults, many of the 

 feathers more or less margined with pale cinna- 

 mon or whitish. 



A migrant, easily distinguishable from the 

 dull colored Stelgidopteryx by the grayish brown 

 band across the white under parts. Nests in 

 holes in sand or clay banks. 



2. Iridoprocne albilinea (Lawrence) 

 Mangrove Swallow 



Sexes alike. Length 115 mm. (4.50 in.); 

 tail 42 mm. (1.65 in.). Above, excepting rump 

 and including sides of neck and ear coverts, 

 glossy greenish steel blue; rump white; a white 

 line on each side of forehead; cheeks and under 

 parts white. 



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