. Nature study and agriculture. Nature study; Agriculture. NESTING 265 scores of others will refuse to live with us. Birds that require some kind of crevice or hollow have still greater dif&culty in finding accommodations. Hollow trees may be regarded as nature's provision for them, and in their absence we must. Bird Houses To be fastened to a post, tree, or building, in a shady location. The open house at the right is for robins, the others for wrens and bluebirds. The floor of the robin house is about 6 by 8 inches.^ Robins want their nest 6 to 15 feet from the ground; wrens and bluebird
. Nature study and agriculture. Nature study; Agriculture. NESTING 265 scores of others will refuse to live with us. Birds that require some kind of crevice or hollow have still greater dif&culty in finding accommodations. Hollow trees may be regarded as nature's provision for them, and in their absence we must. Bird Houses To be fastened to a post, tree, or building, in a shady location. The open house at the right is for robins, the others for wrens and bluebirds. The floor of the robin house is about 6 by 8 inches.^ Robins want their nest 6 to 15 feet from the ground; wrens and bluebirds, 6 to 10 feet. The entrance hole for wrens should be an inch in diameter; for bluebirds, if inch. either supply proper boxes or do without Wrens, Bluebirds, and Martins. Materials; Construction. — The nests vary greatly in many particulars. Generally speaking, the size is in proportion to that of the birds. The usual building materials are dead grasses, twigs, rootlets, plant-down and fiber, hair, and feath- ers. A number of birds, as Robins, Eave Swallows, and Barn Swallows, use mud, while Chimney Swifts get a gummy substance from their mouths to glue together little twigs and fasten them to the chimney Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Schmidt, Charles Christian, 1859-. Boston, New York [etc. ] D. C. Heath & Co
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectagriculture, bookyear
