"... The gardener is usually attended by a friendly robin, and when he turns up the soil the bird will come down close to his feet to pick up the small grubs and worms. Is it not probable that the tameness of the tame young robin so frequently met with is, like that of the robin who keeps company with the gardener or woodman, an acquired habit; that the young bird has made the discovery that when a person is moving about among the plants, picking fruit perhaps, lurking insects are disturbed at the roots and small spiders and s shaken from the leaves? We are to the robin what the cow is to the and the sheep to the —a food finder."