CHIMNEY SWIFT. 



CHIMNEY SWALLOW. 



• ClLErURA PELAGICA. 



Char. General color sooty brown, paler on the throat and breast, 

 tinged with green above. Length about 5X inches. 



• Nest. Usually in a chimney, sometimes in a hollow tree or a barn; 

 iriade of twigs cemented with saliva. 

 Eggs. 4-5; white; 0.70 X 0.50. 



This singular bird, after passing the winter in tropical Amer- 

 ica, arrives in the Middle and Northern States late in April or 

 early in May. Its migrations extend at least to the sources 

 of the Mississippi, where it was observed by Mr. Say. More 

 social than the foreign species, which frequents rocks and ruins, 

 our Swift takes advantage of unoccupied and lofty chimneys, 

 the original roost and nesting situation being tall, gigantic 

 hollow trees such as the elm and buttonwood {Platanus). 

 The nest is formed of slender twigs neatly interlaced, some- 

 what like a basket, and connected sufficienltly together by a 

 copious quantity of adhesive gum or mucilage secreted by the 

 stomach of the curious architect. This rude cradle of the 

 young is small and shallow, and attached at the sides to 

 the wkll of some chimney or the inner surface of a hollow 



