CARE OF BIRD HOUSES 



585 



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Fig. 6. — cross and longitudinal sections of food house shown in figure 5. 



house. Of all our house birds, martins 

 alone are social. The fact that there is 

 a limit to the possible bird population 

 on any given tract must be taken into 

 consideration. When the probable ten- 

 ants have been decided upon, the 

 selection of sites is in order, for the site 

 often decides the style of house that is 

 to occupy it. In the final placing of 

 bird houses, care should be taken to 



have them face away from the winds 

 prevailing in stormy weather. The 

 strongly developed homing instincts of 

 birds can be relied on to attach them 

 to the neighborhood where they first 

 saw the light, and the identical pairs 

 which nest in the houses provided for 

 them one year will often return the 

 next season to enjoy the same bounty 

 and protection. 



s-^ 



-36"- 



S] 



~3'^'/£' 



AV-? 



36"— 



-27" 



S2r 





r?7-^ 



-30'' 



6-^ 



-/£"' 



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-/7"- 



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♦ - 



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-^7" 



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Fig. 7. — lumber diagrams of food shelter shown in figure 5. 



