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The Condor, Volume 57, Number 2 (1955)

2 (March-April)


Observations on Mexican Birds. 65-80.
Dean Amadon, Don R. Eckelberry.
Determinate Laying in Barn Swallows and Black-Billed Magpies. 81-87.
David E. Davis.
Winter Society of the Oregon Junco: the Flock. 88-111.
Winifred S. Sabine.
The Natural Termination of the Refractory Period in the White-Crowned Sparrow. 112-116.
Donald S. Farner, L. R. Mewaldt.
Avian Mortality From Ddt in Californian Rice Fields. 117-118.
Robert L. Rudd, Richard E. Genelly.
Notes and News. 127.
Publications Reviewed. 127.
Cooper Society Meetings. 127-128.

From Field and Study

Calliope Hummingbird Entangled in Grass Barbs. 119.
Harold M. Tucker.
Glossy Ibis in Oklahoma. 119-120.
George Miksch Sutton.
A Winter-Active Poor-Will. 120.
Norman H. Mellor.
Some Recent Arizona Bird Records. 120-121.
Robert W. Dickerman.
Black Scoters Reported From Baja California. 121-122.
Carl L. Hubbs.
Taxonomic Comment on Races of Leach Petrel of the Pacific Coast. 122.
W. E. Clyde.
Nesting of European Starling in Western Montana. 122-123.
John L. Blackford.
Another Blue-Footed Booby in Southern California. 123.
Alma Stultz.
Great Swallow-Tailed Swift in Michoacan, Mexico. 123-125.
Robert K. Selander.
The Nighthawks of the Tamaulipas Coast of Mexico. 125-126.
Richard R. Graber.
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