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A New Hummingbird from Southern Mexico
J. Stuart Rowley and Robert T. Orr

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Effects of Deafening on Song Development in Two Species of Juncos
Masakazu Konishi

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The Mexican Races of the Least Pygmy Owl
O. Marcus Buchanan

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Comparative Behavior and Relationships of the Eiders
Paul A. Johnsgard

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Hybridization in the Orioles of the Great Plains
Charles G. Sibley and Lester L. Short Jr.

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Birds Collected in Nicaragua by Bernardo Ponsol
Thomas R. Howell

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Notes and News
The Condor

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Back Matter (PDF)
The Condor

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Front Matter (PDF)
The Condor

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Recent Bird Records from Southern New Mexico
Bruce K. Harris

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Another Pacific Record of the Black Swift Off Mexico
O. Marcus Buchanan and Harry L. Fierstine

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A Vagrant Occurrence of the Black Phoebe in Southeastern Washington
W. H. Rickard

Note on the Feeding Habits of the Caracara in South Texas
W. C. Glazener

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Open-billed Probing by the Princess Stephanie Bird of Paradise
C. J. O. Harrison

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Unusual Feeding Behavior of a Goshawk
Peter W. Westcott