PLATE VII. 



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

 vation of the Massachusetts Commission on Fisheries and Game at Martha's Vine- 

 yard. (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 successful. A large proportion of these boxes on 

 all the fences were occupied. (Original photograph.) 



