NESTING-HOUSES 65 



Earn Swallow. — For the eave swallows a long 

 shelf or cleat may be fastened just under the eaves 

 of a barn. 



Chimney Swift. — It is worth while to experi- 

 ment with the chimney swifts, by making artificial 

 chimneys of wood in imitation of the old-fashioned 

 chimneys so commonly frequented by these birds. 

 A few cleats nailed horizontally may assist the 

 birds in attaching their nest. Such a box may be 

 placed anywhere on the roof. This board chimney 

 has been successfully tried. 



Nesting-material. — There are still other birds, 

 which, while they will not allow us to choose the 

 exact site of their nest for them, may sometimes 

 be induced to locate their nest in our immediate 

 vicinity if some materials which can be utilized 

 in the construction of the nest are placed in a 

 conspicuous place which is easily accessible. A 

 careful examination of a large number of nests 

 over large areas would probably show that there 

 are few of our common species that do not oc- 

 casionally use materials which have been manu- 

 factured by man, such as yarn, string, paper, etc. 

 This follows naturally from the habit which many 

 birds have of nesting near human habitations. 

 There are certain species, however, which use an 



