conti:nts 
A Forty-five Year History of the Snowy Heron in Utah (with map and one 
photo by G. R. Walker) Antwonet, Edward and A. O.'.Treganza 245 
The Effects of Irrigation on Bird Life in the Yakima Valley, Washington 
..Clarence Hamilton Kennedy 250 
Breeding of the Bronzed Cowbird in Arizona (with two photos by H. T. Murphy) 
- ' M. French Gilman 255 
FROM FIELD AND STUDY: 
Arizona Records 
The Struggle for Existence 
Beautiful Bunting in California 
Notes from Sacaton, Arizona 
Migration of the Gannet 
New Breeding Records for California 
EDITORIAL NOTES AND NEWS 
PUBLICATIONS REVIEWED 
MINUTES OF COOPER CLUB MEETINGS 
INDEX TO VOLUME XVI 
F. Stephens 259 
.John /. Boyce 260 
F. S. Daggett 260 
M. French Gilman 260 
J. H. Gurney 261 
....Joseph Mailliard 261 
262 
263 
265 
267 
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