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King Eiders Mated with Common Eiders in Iceland
Olin Sewall Pettingill Jr.

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Forty Years of Spring Migration in Southern Connecticut
Aretas A. Saunders

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An Audio Technique for the Study of Nocturnal Migration of Birds
Richard R. Graber and William W. Cochran

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Calculation of Flight Directions of Birds Observed Crossing the Face of the Moon
I. C. T. Nisbet

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Song and Tree Sparrow Weight and Fat Before and After a Night of Migration
Carl W. Helms

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Homing of Purple Martins
William E. Southern

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The Development of Sound-signal Preferences in Ducks
Peter H. Klopper

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Some Functions of the Rectrices and Their Coverts in the Landing of Pigeons
Harvey I. Fisher

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Ornithological News
Wilson Bulletin

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Ornithological Literature
Wilson Bulletin

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Proceedings of the Fortieth Annual Meeting
Aaron M. Bagg

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Back Matter (PDF)
Wilson Bulletin

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Front Matter (PDF)
Wilson Bulletin

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Tarsal Scutellation of Song Birds as a Taxonomic Character
A. L. Rand

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Foot-paddling Feeding Behavior in a Semi-palmated Sandpiper
Andrew J. Meyerriecks

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Tarsal Oiling by a Banded Fox Sparrow
Jack P. Hailman

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The Taxonomy of the Robin in Mexico
J. Dan Webster

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Octaves and Kilocycles in Bird Songs
Aretas A. Saunders

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Early and Elaborate Nests of the Killdeer in Hancock County, Ohio
Richard Stuart Phillips

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A Hybrid White-crowned X White-throated Sparrow
Jackson M. Abbott

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A Nesting Colony of Forster's Terns and Black Skimmers in Southwestern Louisiana
J. L. Chamberlain