CONTENTS. 



Page 



Editor's Preface 11 



Memorial Note of Dr. Bert Heald Bailey - 15 



Bibliography of Doctor Bailey - 18 



Introduction 19 



General Information...?. 



Sources of Information and Acknowledgment 23 



Topography and Distribution 34 



How to Measure a Bird 40 



Key to Iowa Birds of Prey 40 



Key to Iowa Eagles, Hawks, Kites and Falcons 41 



Key to Iowa Owls 43 



Notes 44 



Descriptions of Iowa Birds of Prey 46 



Order Raptores. Birds of Prey 46 



Siiborder, Sarcorhamphi. American Vulturer 46 



Family Cathartidae. American Vultures 46 



Genus Cathartes 46 



Cathartes aura septentrionalis. Turkey Vulture 46 



Suborder Falcones. Vultures, Falcons, Hawks, Buzzards, 



Eagles, Kites, Harriers, 'etc 51 



Family Buteonidae. Hawks, Eagles, Kites, etc 51 



Genus Elanoides 51 



Elanoides forficatus. Swallow-tailed Kite 51 



Genus Ictinia 56 



Ictinia mississippiensis. Mississippi Kite :-. 56 



Genus Circus 59 



Circus hudsonius. Marsh Hawk 59 



Genus Accipiter 69 



Accipiter velox. Sharp-shinned Hawk 69 



Accipiter cooperi. Cooper's hawk 74 



Genus Astur 83 



Astur atricapillus atricapillus. Goshawk 83 



Astur atricapillus striatulus. Western Goshawk 88 



Genus Parabuteo 91 



Parabuteo unicinctus harrisi. Harris's Hawk.... .. 91 



