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 
Issued from the Office of Tar Conpor, Museum of Vertebrate Zoology, Berkeley, California 
SUBSCRIPTION RATES a 
Two Dollars per Year in the United States, payable in advance. 
Forty Cents the single copy. 
Two Dollars: and Twenty-five Cents per Year in all other countries in the International Postal Union. 
. COOPER CLUB DUES 
Two Dollars per; year for members residing in the United States. 
Two Dollars and Twenty-five Cents in all other countries. 
Manuscripts for publication, and Books and Papers for Review, should be sent to the Editor, J. GRINNELL, 
Museum of Vertebrate Zoology, University of California, Berkeley, California. 
Claims for missing or imperfect numbers should be made of the Business Manager, as addressed below, 
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 
Business Manager. 
W. LEE CHAMBERS, Business Manager, Eagle Rock, Los Angeles County, California. 
Issued September 24, 1920 
CONTENTS | 
The Pink-sided) WwMeG! 8) MN GUN We LOUIS Eg tea a M.P. Skinner 165 
The Function of Powder Downs in Herons (with two photos) .............2.2020........ 
aN A ON SAUER ACC SSS NOE ALA ALL Ur ce Na AR Alexander Wetmore 168 
Notes on a Few Birds of the Grand Canyon, Arizona....Velicent Humason Lee 171 
New and Interesting Records of Pribilof Island Birds............ G. Dallas.Hanna 173 
Notes on Some Birds of Interior Alaska..........0..00000000000000.... Lee Raymond Dice 176 
FROM FIELD AND STUDY 
Sunlight and)! Shadows (hi (ih Gy ance rian Chreswell J. Hunt 186 
How Fast, Cana. Roadrunner Run ti es Pie Richard Hunt 186 
Notes on Some Birds of Santa Cruz Island, California..Ralph Hoffmann 187 
A’ Pecuhar WM lieker | Tait i600. 10 cs Sd aN RTA Moen ae Luther Little 188 
Authors’ Names in the Second Condor Index........................ T. 8S. Palmer’ 188 
Bryant Marsh Sparrow in the Hills.......020002002000 Harold H. Bailey 188 
Blue-fronted Jay Nesting in Los Angeles, California..VMary Mann Miller 188 
Domesticating California Birds (with one photo)..-..0.200200002 2.02 
EE) DOES Na pa en Carroll. DeWwikton, Scarce aaa 
Clark Nutcracker and White-winged Dove in Southern California........ 
SN RNA BEC AUIS PLE NNER ASLAN Ope eC IN TRU, John C. Fortiner 190 
‘Interesting Records from the San Joaquin Valley Region..John G. Tyler — 
Nesting of the Blue-fronted Jay in South Pasadena..:......... Luther Little 
An Ovenbird on the Mohave Desert.......02.....222..222---------------- Richard Hunt 
HDITORIAL; NOTES AND: NBWSul ea A ee eevee 
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