BIRD HOUSES AND HOW TO BUILD THEM. 



FIG. 10. Nest shelter. 



p 



<0 



9'/a' 



FIG. 11. Lumber diagrams for nest shelter shown 

 in figure 10. Thickness of boards \ inch. 



FIG. 12. Cross section and 

 interior view of front half 

 of house for swallows and 

 bluebirds. 



FIG. 13. Foundation 

 for house shown ia 

 figure 12. 



FIG. 14. Floor ami posts 

 added to foundation 

 shown in figure 13. 



FIG. 15. House ready to place over floor 

 and posts as shown in figure 1 4 . 



