. Seventh annual bird-house booklet. . I Cut showing- how the handy hinged i pole and angle-iron attachment are con- I 21 ft.,weight 240 lbs. i This is the model for all Martin hous- I es except styles 3 and 4 which are lar- I ger and heavier, and provided with I extra heavy hand-made The Jacobs Food Shelter in opera-tion; snow 12 inches description on page 26 The Jacobs Bird-House Company,-the pioneer AmencanX\ra-<iouWemanufac^^^^^ Single Rooiil Nest*boxes: The single room nest-boxes are the best for attract-ing such birds as Bluebird, Wren, Chickadee, Tre
. Seventh annual bird-house booklet. . I Cut showing- how the handy hinged i pole and angle-iron attachment are con- I 21 ft.,weight 240 lbs. i This is the model for all Martin hous- I es except styles 3 and 4 which are lar- I ger and heavier, and provided with I extra heavy hand-made The Jacobs Food Shelter in opera-tion; snow 12 inches description on page 26 The Jacobs Bird-House Company,-the pioneer AmencanX\ra-<iouWemanufac^^^^^ Single Rooiil Nest*boxes: The single room nest-boxes are the best for attract-ing such birds as Bluebird, Wren, Chickadee, Tree Swallow, Nuthatch, Flicker, Tufted-tit, CrestedFlycatcher, Red-headed Woodpecker, etc. Unlike the Martins, the species of hole-nesting birds, mentioned above, are unsociableat the breeding season. That is, they will not colonize in one box. A pair of bluebirds willtake quarters in a house and whip off all comers, even of their own kind. Except the Tree-Swallow, it is the same with the wren and all other species for which the single room orindividual nesting-boxes are made. If you put these up at random in suitable places onyour premises, every box may eventually be taken, which is never the case with a bluebirdor wren house having more than one room. Do not be deceived into the belief that you can c
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