Contents
A New Genus and Species of Cotinga from Eastern Peru
George H. Lowery Jr. and John P. O'Neill
An Approach to the Functional Analysis of Bill Shape
Walter J. Bock
In Memoriam: Paul Lester Errington
A. W. Schorger
Physical and Behavioral Factors in Sociality and Evolution of Certain Parrots (aratinga)
John William Hardy
Relationships of Birds and Arboviruses
Donald D. Stamm
Behavior of the Australian Musk Duck and Blue-billed Duck
Paul A. Johnsgard
Electrophoretic Study of Blood Proteins of Some Procellariiform Birds
Lauren E. Brown and Harvey I. Fisher
Recent Literature
The Auk
Notes and News
The Auk
General Notes
Drinking Behavior of Sandgrouse in the Namib and Kalahari Deserts, Africa
Tom J. Cade, Ernest J. Willoughby, and Gordon L. Maclean
Drinking Behavior of Mousebirds in the Namib Desert, Southern Africa
Tom J. Cade and Lewis I. Greenwald
Cassin's Sparrow in New Jersey
Jeff Swinebroad
Additions to the Avifauna of the Pribilof Islands, Alaska, Including Five Species New to North America
William J. L. Sladen
The Occurrence of Red-throated Pipits in California
R. Guy Mccaskie
Predation on a Greater Prairie Chicken by a Goshawk
Richard J. Moran
Hummingbird Survives through December in North Carolina
Doris C. Hauser and Neill Currie Jr.
Occurrence of Collyriclum Faba (trematoda) in a Varied Thrush with a Note on a Single Bird's Internal Parasites
Albert G. Canaris
Plumages and Molts in the Long-billed Marsh Wren
Herbert W. Kale II
Covers
Front Matter
The Auk
Back Matter
The Auk