Page 12 - Food_chains_FULL
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        An owl generally swallows its prey whole.              esophagus
        Some parts of the prey, such as bones,
        are indigestible and form an oval-shaped                glandular
        mass called a pellet in the owl’s gizzard.               stomach
                                                                       pellet
 skulls                     jaws                           scapula       gizzard                  pelvis










        The pellet is regurgitated through the owl’s
        mouth. A pellet may contain the remains
        of more than one prey if the owl has eaten
        multiple meals within several hours.
                          limbs                                       vertebrae



                      fur                                       pellet
                      fur
           skull                           feather
                                           feather
            skull
          skulls                   jaws            jaw  scapula expelled          pelvis
                                                    jaw







                                 limbs                         vertebrae
                                          teeth
                  bones                 teeth
                   bones
        Scientists can learn about an owl’s diet by examining its pellets.
        Bones, fur and feathers provide evidence of what the bird has eaten.












                                                                                                mouse
                                                                                                  mouse

                                                                               The bones can be specifically
                                                                               identified as part of the skeletal
                                                                                mouse
                                                                               system of a particular animal.


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