Although written for middle schoolers, there is no reason that a 3rd, 4th, or 5th grader could not also learn about food chains through the dissection of owl pellets. After you introduce the topic, learners complete an owl research worksheet by visiting "The Owl Pages" website. Then, give explorers each an owl pellet to disassemble and sort through. The tiny bones are then glued onto an index card. A mentioned transparency of a vole skeleton is not included, but you can easily find one online to display for reference.