CONTENTS 



The Present State of the Ornis of Guadaloupe Island John E. Thayer and 



Outram Bangs 101 



Some Fall Migration Notes from Arizona Harry S. Swarth 107 



The Mexican Black Hawk (with one photo) Gerald Bamber Thomas 116 



A Migration Wave of Varied Thrushes .Joseph MailUard 118 



Notes on the Waltzing Instinct in Ostriches .F. W. D 'Evelyn 119 



Three Nests of Note from Northern California Harry H. Sheldon 120 



Notes from Santa Cruz Island C, B. Linton 124 



PROM FIELD AND STUDY 



The Green-winged Teal Breeding in California E. A. Goldman 129 



Cooper Hawks Attacking Crows Joseph Mailliard 129 



Salpinctes obsoletus pulverius restricted to San Nicolas Island C. B. Linton 129 



Odds and Ends from Washington State /. H. Bowles 129 



Some Birds of Ana Capa Island /. Grinnell 130 



The Condor in the San Joaquin Valley George W. Stewart 130 



EDITORIAL NOTES •. 131 



MINUTES OF COOPER CI<UB MEETINGS . 132 



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