At mid-day they switch to eating fruits and hunting in trees for spiders and other small creatures. Baby robins sometimes consume as much as 150 percent of their body weight in a 12-hour period. A Humorous Read-Aloud Robins eat worms, and plenty of them. Yes, earthworms get their nutrition from many forms of organic matter in soil. They eat decaying roots and leaves, and tiny organisms such as nematodes, protozoans, rotifers, bacteria, and fungi.
Worms also feed on the decomposing remains of other animals.
No wonder worms are such a nutritious food source for robins. Even if a robin won't care how many calories are in a worm, WE still wondered. We asked Forest Ecologist Cindy Hale if she knew the answer. This Journey North activity tells how to bring up worms and what to observe after you've collected some. Students can work in teams with one partner as recorder, or draw and record in their own journals.