THE CONDOR 
A Magazine of Western Ornithology * 
Seb A | : Published Bi-Monthly by the Cooper Ornithological Club 
i i Butacea 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 
P 4 _in Section 1103, Act of October 3, 1917. Authorized January“ , 1921. © ; i > 
baud from the Office of THE CONDOR, Museum of wha dale a Zoology, Bonatey: saeasts ; 
Auth, Suda 4 «| 
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’ Museum of Vertebrate Zoology, University of California, Berkeley, California. Yee iui 
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Business Manager. a "I by 
W. LEE CHAMBERS, Biisinieas: I itdnaeees Eagle Rock, Los Angeles County, California. eran yh eR n 
Teed March 31, 1921 i Means: ? } Aas ae, 1. 
oY ‘ ( ! | . we * . har . Rev i 3 a 
RCAC Manet CONTENTS Oe 
The Bigerantin of Nip and Tuck, a Study of Instincts in. ‘pias. ‘taoder dae ae Dy ee 3 
j ye / ' ' rey 
Notes on Two Characteristic Birds of the San Gabriel Wash (with four photos) nf he Oe 
EP ons AIO. 2 A AT oa APD ADE A SAE A NARMS IAN e491 1 S. Woods 47 en ae 
The Pribilof Sandpiper (with one photo) .......... SENSE ats) G. Dallas Hanna 50 51 Ls 
Notes from Southern Arizona............--------- ‘pe RS Selec te ey fon Bein) ae “Ci Tee 
The Sitkan Race of the Dusky Grouse... Un iis ‘S. Swarth 59 Fst hege Ws = 
Further Notes on Birds Observed near Williams, Arizona..Alecander Wetmore 60 / SRR UD Ay, 
A ; y Fe ‘ \ Ne 
FROM) FIELD AND: STUDY a 4 : es “SNe oa } Dy Note) ah 
\" pdms ea Purp 
Late Fall Occurrence of the Lutescent Warbler at Penigley 4 eer? SAMA ici 9 ; OM es ss: 
1 Yih 0" aa cn case LUE ASABE DMs AULD ns YEA STAI A Bessie W. Kibbe 64 pS ae 
The lack-throated Gray Warbler in Santa Cruz County, California, TD) 3) rahe ue 
' Summer ...... Poa Me aMEaTM TE 8. Ray) 65. eae 
UES | | A Flight of Harris Pye One nash IN Mie .W. Lee Chambers 65 | ~~ 
ae Red-bellied Hawk Hats Caterpillars -...............-- Seu al Harold ©. Bryant 65 yee 
Meni Ring-necked Duck Again from near roe California SS ed ae NES ROU ; is 
A ak bibs yor ig DOS onl NAS CW CIM PLD ESRI LR Hy Wright NM. “Pierce 65 
4 OS A ne. Record for the Emperor Goose in Oregon... ae MAMI ep Alex Walker 65 — 
Sg a _ Buropean Widgeon in Santa Barbara County... aes a Bs E. Colburn RLM ke 
eo je Feeding Habit of the Varied Thrush......... HM LE ate J. Eugene Law ) Sn 
Se  Anent Red-winged: Blackbirds.) 80 cu cee ee Joseph Mailliard | see's on i 
ree ie Pileated Woodpecker versus Cooper Grew Te oaeae W. Michael ° 68 Me 
MUNG | eg Two Unusual Winter asians for the San Francisco Bay Region........... ‘ 
1 MIEN Sac igs MIAN) Gira it a aati REO vee Seqocseeetectatttteeeeecnenteccnseenttnnaenennasnte -Margaret W. ae: 
An Afternoon with the Hotboel Grebe EE MES i Ms ia D. Henderson | 
"EDITORIAL NOTES AND NEWS). 000002 ae | 
_Aretas A. Saunders (photogtaph yi pe Wise RE 
* Communication—A_ Plea for Professional Courtesy... | 
_ MINUTES OF COOPER CLUB MERTINGS PAD) ates: 
