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18 inches attract bark boxes Barn Swallow Berlepsch nesting box birch bird house bottom box actually occupied box and details box Fig boxes properly building cat proof cement chickadees compartments Crested Flycatcher details of construction downy woodpeckers Eaves Swallows EDWARD HOWE FORBUSH enemies of birds English sparrow entrance hole Ernest Harold Baynes farm fastened feet in length Flicker box gourds Groton ground hole-nesting birds hollow limbs House Wren HOUSES AND NESTING hung inches in diameter inches inside dimensions insect Interior dimensions Long axis vertical martin houses Massachusetts Meriden nest in box nesting material Original photograph taken overhang paint pair of bluebirds phcebes Plate VIII poles protected against cats rafter Red-breasted Nuthatch ridgepole Robins roofing felt sawed into sections Sayward shingles side snake proof sparrow hawks squirrels Swallow box tree swallows nest ventilation White-breasted Nuthatch WILLIAM BREWSTER Winthrop Packard Wood Duck wooden
Page 9 - Make the entrance hole and the box itself just large enough for the bird you want — no larger. This will tend to keep out larger birds, as well as the birds' enemies, will give the bird a better chance to defend its home, and will save material. 6. Make nesting boxes of weathered wood, or paint or stain them with...
Page 9 - Ordinarily ventilation is unnecessary if the entrance is near the top of the box as it should be, but in very hot summers young birds are believed to have died of heat in unshaded boxes mounted on poles. Ventilation may be provided by boring...
Page 9 - Make nesting boxes of weathered wood, or paint or stain them with colored linseed oil of a neutral tint resembling dead wood or bark, or put them up in the fall that they may become weather-stained before spring.
Page 10 - A few practical details in regard to carrying out some of the above rules should be noted. If the roof of a nesting box, made of wood, is horizontal, the water will stand on it, and even if painted it will warp somewhat in drying unless covered with zinc, good roof paint, some good roofing felt or other waterproof material.