Gallery: Illustrations   Aspects of Biology:  ATony Angell Territorial Defense: Red-winged Blackbird Cavity Nesting: Western Screech-Owl A Darryl Wheye Predation: Cat and Duckling   Don R. Eckelberry Identifying Similar Species: Prairie Falcon Peregrine Falcon A A Julie Zickefoose Identifying Similar Species: Cooper's and Sharp-shinned Hawks   BACK