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      February 2009  - Studying owls sometimes involves some detective work, including collection and analysis of pellet contents.  Every once in a while, a pellet is found partially opened, such as this one with a vole skull and variety of other bones easily visible.  However, in this case it is more difficult to tell who the predator was - likely though a Great Horned or Long-eared Owl given the location   (Photo by Marcel Gahbauer) 
      
      
       
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