PLATE VII. 



Fig. 1. — a colony. Three nesting boxes on one tree, all occupied by birds, on the 

 reservation of the Massachusetts Commission on Fisheries and Game at Marthas 

 Vineyard. (Original photograph.) 



Fig. 2. — a row of nesting boxes on a pasture fence on the farm of Mr. William P. 

 Wharton, Groton, Massachusetts. This plan is succos.sful. A largo iiroportion of 

 these boxes on all the fences were occupied. (Original photograph.) 



