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The Condor, Volume 71, Number 3 (1969)

Publication Information
Journal: 
Condor
Year: 
1969
Volume: 
71
Issue: 
3 (July)

CONTENTS

Convergent Characteristics in Sympatric Species: A Possible Relation to Interspecific Competition and Aggression. 223- 239.
Martin L. Cody.
Birds and the Ant X Acacia Interaction in Central America, with Notes on Birds and Other Myrmecophytes. 240-256.
Daniel H. Janzen.
Vocalizations of the Rufous-Sided Towhee, Pipilo Erythrophthalmus Oregonus. 257-266.
Joan Beltz Roberts.
Seasonal Cycle of Reproductive Physiology in the Black-Billed Magpie. 267-279.
Michael J. Erpino.
Food Habits of Canvasbacks, Redheads, and Lesser Scaup in Manitoba. 280-290.
James C. Bartonek, Joseph J. Hickey.
Respiratory Metabolism of the Red-Winged Blackbird in Relation to Ambient Temperature. 291-298.
R. W. Lewies, M. I. Dyer.
The Song of the Chingolo, Zonotrichia Capensis, in Argentina: Description and Evaluation of a System of Dialects. 299- 315.
Fernando Nottebohm.
Ecological Aspects of Migration, and Pre-Migratory Fat Deposition in the Lesser Redpoll, Carduelis Flammea Cabaret. 316- 330.
P.R. Evans.
News and Notes. 337-338.
 .
Publications Received. 338.
 .
Cooper Ornithological Society Statement of Assets and Fund Balances Resulting From Cash Transactions. 339.
 .
Summary of Cash Receipts and Disbursements and Changes in Fund Balances. 339.
 .
The Bulletin Board. 340.
 .

Short Communications

Recent Bird Records From the Virgin River Valley of Utah, Arizona, and Nevada. 331-335.
Roland H. Wauer.
Calculation and Miscalculation of the Equations Relating Avian Standard Metabolism to Body Weight. 335-336.
Robert C. Lasiewski, William R. Dawson.
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