. Useful birds and their protection. Containing brief descriptions of the more common and useful species of Massachusetts, with accounts of their food habits, and a chapter on the means of attracting and protecting birds. Birds; Birds. 110 USEFUL BIRDS. to tree culture cecropia has no equal in some portionn of the prairie country, and that its large caterpillars often defoliate entire groves. Mr. W. C. Colt, who has had experience in raising trees in Dakota, told me that the caterpillars of this. Pig. 37.—The larva of the eecropia moth, a destructive leaf-eating insect, held in check by birds.
. Useful birds and their protection. Containing brief descriptions of the more common and useful species of Massachusetts, with accounts of their food habits, and a chapter on the means of attracting and protecting birds. Birds; Birds. 110 USEFUL BIRDS. to tree culture cecropia has no equal in some portionn of the prairie country, and that its large caterpillars often defoliate entire groves. Mr. W. C. Colt, who has had experience in raising trees in Dakota, told me that the caterpillars of this. Pig. 37.—The larva of the eecropia moth, a destructive leaf-eating insect, held in check by birds. and other large species were terribly destructive there. As groves and orchards became established, however, and arbo- real birds spread over the country, these caterpillars were reduced to a state of comparative harmlessness. There is good reason, therefore, for the belief that the caterpillars so commonly eaten by practically all arboreal birds would, to- gether with the borers, destroy all the forests were the birds to be banished from their chosen haunts.^ ' The latter part of this chapter consists of revised portions of several papers hy the author, originally puhlished hy the Massachusetts State Board of Agri- 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 Forbush, Edward Howe, 1858-1929; Massachusetts. State Board of Agriculture. [Boston, Mass. ]
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