Includes 30 large, heat-sterilized, individually-wrapped barn owl pellets. Features 8 posters: Bone Sorting, Food Web, Vole Skeleton, Mole Skeleton, Shrew Skeleton, Hum/Vole Comparison and Pellet Formation. Includes a set of 15 8"x11" bone sorting sheets on paper stock as well as a teacher's guide containing background information, suggested teaching strategies, a laboratory guide, projects, skull keys and references.