CONTENTS. 



Page. 



Introduction 7 



Bobolink {Dolichonyx oryzivonis) 12 



Cowbird {Molothrus aler) 22 



Yellow-headed blackbird {Xanihocephalus xanthocephalus) 30 



Red-winged blackbird {Agelaius j^hceniceus) 33 



California red-winged blackbird {Agelaius gubernator californicus) 44 



Eusty blackbird {Scoleco])hagus carolinus) 45 



Brewer's blackbird {Scolecophagus cyanocephalus) 50 



Crow blackbird ( Quiscalus quiscula) 53 



Boat-tailed grackle ( Quiscalus major) 70 



Distribution of stomachs 72 



5 



