. 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 . Fig. 150.—Purple Martin,female. BIRDS OF MARSH AND WATERSIDE. 349 ^^■^v■;H>M,^v. CHAPTER X. BIRDS OF MARSH AND WATERSIDE. The birds of Avet, waste lands, fresh-water meadows,marshes, swamps, and the shores of ponds and rivers seemat tirst sight to be of no importance from an economic point of view. Still, most ofthe ]\Iarsh Wrens, S[)ar-rows. Herons,and water-fowlthat liv
. 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 . Fig. 150.—Purple Martin,female. BIRDS OF MARSH AND WATERSIDE. 349 ^^■^v■;H>M,^v. CHAPTER X. BIRDS OF MARSH AND WATERSIDE. The birds of Avet, waste lands, fresh-water meadows,marshes, swamps, and the shores of ponds and rivers seemat tirst sight to be of no importance from an economic point of view. Still, most ofthe ]\Iarsh Wrens, S[)ar-rows. Herons,and water-fowlthat live in Fig. 151. —Salt-marsh caterpillar. This species gi^ip}]^ localitiesis eaten by marsh birds. undoubtedlyhelp to prevent uprisings of such field pests as thearmy worms, the green grassho})pers, and the salt-marsh caterpillars, that sometimes multi})ly so inlowlands as to overrun and devastate the uplandcrops. The Herons are of some further serviceto man, for, l)esides eating insects, they help toprevent the undue increase of meadow mice, rep-tiles, and frogs. Space will not permit detaileddescriptions of the marsh birds and water birds,but a brief mention may be made of some of themost important species. PERCHING BIRDS. Song Sparrows, Savanna Sparrows, Blackbirds,Grackles, and Bobolinks, all
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