THE CONDOR 
A Magazine of Western Ornithology 
Published Bi-Monthly by the Cooper Ornithological Club 
Entered as second-class matter November 29, 1919, at the post-office at Berkeley, California, under Act 
of Congress of March 3, 1879. Acceptance for mailing at special rate of postage provided for 
in Section 1103, Act of October 3,1917. Authorized January 5, 1921. 
Issued from the Office of THE ConDOR, Museum of Vertebrate Zoology, Berkeley, California 
SUBSCRIPTION RATES 
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e COOPER CLUB DUES 
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Museum of Vertebrate Zoology, University of California, Berkeley, California. 
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within thirty days of date of issue. 
Cooper Club Dues, Subscriptions to The®Condor, and Exchanges, should be sent to the Business 
Manager. 
For the Purchase of Back Volumes of The Condor or of the Pacific Coast Avifauna series, apply to the 
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W. LEE CHAMBERS, Business Manager, Kagle Rock, Los Angeles County, California. 
Issued February 5, 1921 
CONTENTS 
Acorn-storing by the California Woodpecker (with four photos).......22........-...... 
William E. Ritter 3 
Suggestions Regarding the Systema Avium.................0-.. Richard C. McGregor 15 
A Hunter’s Notes on Doves in the Rio Grande Valley..........-........: Aldo Leopold 19 
Concerning the Status of the Supposed Two Races of the Long-billed Curlew 
CARI: PWOCS TAP IS es eee Ses, ae eae gece Joseph Grinnell 21 
Notes on some Specimens in the Ornithological Collection of the California 
Academy of Sciences — 2. ep sue E = SEE Joseph 'Mailliard 28 
FROM FIELD AND STUDY i 
Range of the Plain Titmouse in Oregon........................ Stanley G. Jewett 33 
California Woodpecker Steals Eggs of Wood Pewee....Harold C. Bryant 33 
Late Nesting of the Green-backed Goldfinch................ W. Lee Chambers 33 
Speed of Flight of the Red-shafted Flicker....................... Claude Gignoux 33. | 
The Bendire Thrasher Nesting in California (with one photo)............ 
Pao ae a a OS AUC a gi amas PION OBR Tin MEM ee oe Wright M. Pierce - 34 
Unusual Late Summer Birds in Yosemite: Valley 2-3 eee eee : 
Charles W. Michael and Enid Michael 34 
The Harlequin Duck in the Yosemite Valley.................. Harold C. Bryant 35D 
Distribution of the Townsend Fox Sparrow.............-----.----- George Willett 36 
~ The Nuptial Flight of the Allen Hummingbird (with diagram)............ 
Frank N. Bassett | 3 
Oe errr eee 
