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CITIZEN niUD 



The Tree Swallow 



(Or White-bellied Swallow) 



Length six inches. 



Upper parts sparkling green, with darker wings and tail, the 

 latter but little forked. 



Under parts snow-white. 



A sweet, twittering song. 



Nests in the hollows of dead trees, usually in old Woodpeckers' 

 holes, but occasionally in bird-boxes. Kggs pure white. 



Tree Swallow. 



A good Citizen of the United States, but more shy than the Mar- 

 tin and Barn Swallow ; these two often return, year after year, to 

 some favorite nesting place, but the Tree Swallow is not so reliable. 



A Sky Sweeper. 



The Bank Swallow 



(Or Sand Martin) 



The smallest Swallow, only five inches long. 

 Upper parts dusty brown, darker on the wings, and tail forked 

 a little, like the Tree Swallow's. 



