Lesson Summary Students examine owl pellets, remove the rodent bones from them, and compare and contrast their structures to those of human bones.  Then, they reconstruct the skeleton.  Teacher Background The skeletons of humans and other mammals have many similarities.  Bones have different shapes depending on where they are and what their purpose is.  The number and kinds of bones in an organism are characteristics inherited from the parents of the organism. Set-up/Management Tips This activity frequently takes more than the suggested time in the teacher’s manual. It is useful to read the science story prior to working with the owl pellets.  The story describes an owl pellet and how it is formed. Some students may be sensitive to animal fir. Some students to touch owl pellets and gloves are available in the kit. Liquid glue is necessary to glue bones to identification sheet.  Glue sticks DO NOT work well for this activity. During this activity, there will be a certain amount of airborne fir produced.  You may want to consider turning off fans and closing windows. Copy any journal sheets needed for this activity. Literacy Support Books Available Through VAST Mediagraphies: (see Literacy Links) Science Stories Barn Owls  Scientific Vocabulary The following words are key vocabulary words that will be introduced in this lesson and reinforced throughout the unit: No new vocabulary.