The third class is known as the hard-billed birds

The third class is known as the hard-billed birds

The third class is known as the hard-billed birds

The third class is known as the hard-billed birds. It includes those birds which live principally on seeds and grain—the canary, goldfinch, sparrow, and some others.

Birds that come early, like the bluebird, robin, and redwing, are of special service in destroying insects before the insects lay their eggs for the season.