CONTENTS 



Page 



Acknowledgments 1 



Introduction 2 



Phylogenetic Relationships 6 



Features of Brood Parasitism in Clamator 11 



Host Selection and Its Evolution 14 



Intensity of Parasitism Z7 



Egg Morphism 50 



Incubation Period 57 



Host-Parasite Nestling Relationship 58 



Fledgling Feeding by Adult Clamators 61 



Plumage Variations and Their Significance 62 



Polymorphism 70 



Migratory Behavior 75 



Summary and Conclusions 92 



Appendix — Additional Host Data 96 



A. Data on the Hosts of Clamator glandar'ms 96 



B. Data on Additional Hosts of Clamator jacobinus 103 



C. Data on Additional Hosts of Clamator levaillantii 105 



Bibliography 106 



