23 



vided for them to climb. Sometimes martin houses are mounted 

 on dead trees. Smooth poles are beheved to be snake proof. 

 Trees with bark on are not. Cats 

 sometimes quickly climb wooden poles 

 and catch martins by reaching past 

 the lower edge of the house. 



Mr. Jacobs uses a hinged pole for 

 mounting his larger bird houses, so 

 that they may be taken down easily 

 and cleaned out and housed during 

 winter. 



It would facilitate the handling and 

 cleaning out of martin houses if a 

 door opening to the full width of each 



compartment could be provided, and then, if bluebirds or tree 

 swallows persisted in occupying it, their nests and eggs or young 



Fig. 31. — Sayward weathercock 

 house. 



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1 



n-; IT 



|IB 



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 4— Lq a a__L 



Eat 



-iLl 



It U U 



S\Ot t\.HVA>T\OK 



^ 



WtvK 



REE E E E 



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li.»jl 



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 E E E E E E 



Fig. 32. — Details of Sayward house. 



could be removed to single boxes, which should be in readiness 

 in the vicinitv. 



