The school and farmA treatise on the elements of agriculture . CHAPTER X. *^ BIRDS. Our songbirds and others perform a most importantservice in keeping down noxious insects of all kinds,but, with few exceptions, they also do some the fruiting season of raspberries, blackberries,grapes, cherries, the robin, catbird and others live tosome extent on fruit. The injury they thus inflict is, however, of small conse-quence compared with thegood they do to the birds feed their youngon insects, adding only spar-ingly some soft fruit untiltheir stomachs have grownstrong enough
The school and farmA treatise on the elements of agriculture . CHAPTER X. *^ BIRDS. Our songbirds and others perform a most importantservice in keeping down noxious insects of all kinds,but, with few exceptions, they also do some the fruiting season of raspberries, blackberries,grapes, cherries, the robin, catbird and others live tosome extent on fruit. The injury they thus inflict is, however, of small conse-quence compared with thegood they do to the birds feed their youngon insects, adding only spar-ingly some soft fruit untiltheir stomachs have grownstrong enough. The stom-achs of the nestling birdsare thin walled and veryweak at first, hence unfit todigest any material that isnot perfectly soft. InsectsAt first snails, caterpillars,grubs and spiders are fed, later on beetles and otherinsects. The food of the bluebird is in the following pro-portion for the nestling and the adult bird, as shownin recent illustrations of the Yearbook of the Depart-ment of Agriculture, D. C, for Yellow-bellied woodpecker{Sphyrapicus vaHus). answer for this purpose. 219 220 SCIENCE AND AGRICULTURE.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectagricul, bookyear1902
