"Robins do not feed their babies a diet of 100% worms. The babies get a variety of insects and fruits as well. To mimic this diet in captivity, a rehabber feeds primarily mealworms (larvae of beetles, which can be purchased at bait shops, pet shops, some bird feeding shops, and at mail order places such as Grubco and Rainbow Mealworms. This diet is supplemented with earthworms, a baby cockatiel and parrot hand-feeding mixture available at petshops, and fruits and berries. In nature, the parent robins are constantly searching for food and feeding their babies during daylight hours. A baby robin should be fed as much as it can eat at least every half hour from sunrise to sunset. You can take a 2-3 hour break maybe once a day."