No. 4.] REPORT OF STATE ORNITHOLOGIST. 195 



any kind, as it remains most of the time within the wood. 

 Apparently the sparrows do not disturb it, and where they 

 are numerous and native birds are, therefore, scarce, this 

 moth is very injurious, particularly in and around Boston, 

 New York and other large cities. When the moth spreads 

 out into the country, where woodpeckers and other native 

 birds are numerous, it has, thus far, made no headway. 

 Woodpeckers dig into the burrows where the larvae hide, and 



Fig. 1. — ^Perspective and sectional drawings of an 

 improvised nest box for the interior of build- 

 ings. (After Biological Survey.) 



Fia. 2. — Nest box opening at 

 the top. (After Biological 

 Survey.) 



other birds catch the larva when it leaves the branch or tree 

 and crawls about on the bark. Had we kept out the sj^arrow 

 and instead encouraged and attracted native birds into our 

 cities the leopard moth might have been checked with little 

 expense. 



The sparrow, however, has many friends who seem to 

 believe that it does no harm whatever. To those who see only 

 one side of the case, I would recommend the various publica- 

 tions on the sparrow, several volumes of which have been 

 published. Chief among these is Bulletin ]^o. 1 of the Divi- 

 sion of Econoinic Ornithology and Mammalogy of the United 



