On Wednesday, Mrs Smith guided her sixth grade science classes through the dissection of owl pellets to examine the flow of energy in an ecosystem. Owls aren’t able to digest food like other animals, so non-digestible materials are lumped together into a pellet, which the bird then expels – yep, owl vomit. Owl pellets are unique in containing the bones of their previous meal along with fur, feathers, or insect parts. Thus, owl pellets are often used as an introduction to dissection because bones are much easier to identify. They are sterilized before students get them and provide important information about the habitat, diet, and habits of the birds.