662 



AMERICAN FORESTRY 



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Fig. 7. Log split and halves marked to be gouged 

 out to form a cavity. Halves to be screwed to- 

 gether. Top should be covered with tin or zinc. 



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Fig. 8. Outdoor nest shelf. 



Fig. 9. Diagrams for outdoor nest shelf 

 shown in figure 8. 



Fig. 10. Nest shelter. 



That western wrens and bluebirds should take as naturally to artificial shelters 

 as did their eastern relatives was to be expected. On the other hand, the use of 

 houses by birds which until recently had persistently ignored them is surprising, 

 and must be considered a victory for those who have studiously attempted to 

 enlarge their circle of feathered neighbors. 



Woodpeckers, nuthatches, and titmice excavate their own houses, usually new 

 ones each year, leaving the old homes to less capable architects. Builders of 

 artificial houses generally go to the woodpecker for designs, and by vary- 

 ing styles to suit the tastes of different kinds of birds, have been rewarded 



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. 



