by Anntelope » Wed Jul 21, 2010 12:27 am
A single family of crows can consume 40,000 grubs, caterpillars, army worms, and other insects in one nesting season. Twenty percent of the Eastern crow's diet consists of insects that are generally considered pests by gardeners and farmers. Though crows do eat corn, the grain does not make up a large percentage of their diet, and the amount of corn they consume is offset by the good they do for crops by eating damaging insects and larvae.
Crows are good citizens of their ecosystem; their seed transport and storage contribute to the maintenance, renewal, and spread of forests, thereby stemming soil erosion. And their habit of eating carrion makes them nature's cleanup crew.