64 



new houses, but two of these rejoice because White-bellied Swallows 

 located in them. Another bought a Style 9 house expressly for the 

 Bluebirds. 



I would recommend, however, the single room nest-boxes for 

 Bluebirds and Wrens. The Swallows will colonize to the extent of a 

 few pairs. 



The Bluebird prefers an elevation from six to ten feet, and if 

 properly placed the birds will keep to their own box, although the 

 same may be quite near the Martins. My Bluebirds raised two broods 

 (9 nestlings) this year, in the single room boxes, but never did they 

 molest the Martins. 



^ 



Style 7, Martin house of Thomas H. Wilkinson, Attorney a1 Law, Waynesburg, Pa. 

 erected May 6, 1910. (Photo by Jacobs July 24, 1910.) 



