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Testosterone-induced Nuptial Feathers in Phalaropes
J. E. Johns

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The Breeding Behavior of the Cassin Auklet
Asa C. Thoresen

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Physiological Responses to Temperature in the Common Nighthawk
Robert C. Lasiewski and William R. Dawson

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Colorimetric Methods in Ornithology
Robert K. Selander, Richard F. Johnston, and Terrell H. Hamilton

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Avian Population of Four Herbaceous Communities in Southeastern Wyoming
Jean E. Finzel

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Notes and News
The Condor

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Index to Volume 66
Jane R. Durham

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Back Matter (PDF)
The Condor

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Front Matter (PDF)
The Condor

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Mating Behavior of the Montezuma Oropendola
Thomas R. Howell

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A New Subspecies of Lesser Goldfinch from Mexico
P. R. Grant

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Bird Records from San Luis Potosi, Mexico
David A. Easterla

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Bird Records from Southern Oregon
Carl Richardson and Franklin W. Sturges

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Notes on Some Birds from the Rio Conchos, Chihuahua, Mexico
Francois Vuilleumier and John E. Williams

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New Records of Uruguayan Birds
John C. Barlow and Juan Cuello

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Three Winter Records in the Central Valley of California
Verna R. Johnston

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Black-crowned Night Herons in Durango, Mexico
Julian P. Donahue and Carleton J. Phillips

Correction
Bruce K. Harris