Contents
Selective Feeding by Juvenile Diving Ducks in Summer
James C. Bartonek and Joseph J. Hickey
Some Aspects of Temperature Relations in Small Owls
J. David Ligon
Salt and Water Balance in Seaside and Sharp-tailed Sparrows
Thomas L. Poulson
Female Territoriality in a Tropical Hummingbird
Larry L. Wolf
Habitat Relations of the Parulidae during Spring Migration
James F. Parnell
Purple Martin Population Changes Over Fifteen Years
Harold F. Mayfield
Responses to High Temperature in Nestling Double-crested and Pelagic Cormorants
Robert C. Lasiewski and Gregory K. Snyder
An Experimental Study of Clutch Size of the American Coot
Leigh H. Fredrickson
Periodical Literature
The Auk
General Notes
Pinealectomy in Harris' Sparrow
Richard S. Donham and Fred E. Wilson
Brandt Cormorant Killed by Fish
G. Victor Morejohn
The Indian House Crow Attacks a Five-striped Squirrel
S. N. Sen Gupta
A Hybrid Lesser Scaup X Ring-necked Duck
Bertin W. Anderson and Richard L. Timken
Aggressive Foraging Behavior in House Sparrows
Richard F. Johnston
A String-pulling Tufted Titmouse
J. C. Dickinson Jr.
Specific Gravity of White Pelican Eggs
Roger M. Evans
Bald Eagle Swimming in Ocean with Prey
R. Wayne Campbell
Leg Spurs on Female Wild Turkeys
Lovett E. Williams Jr. and David H. Austin
The Breeding Status of the Black-necked Stilt in Canada
W. Earl Godfrey
The Owls of the Central Brooks Range, Alaska
John M. Campbell
The Blue-backed Tanager (cyanicterus Cyanicterus), a Genus New to Venezuela, with Notes on Its Plumages
Kenneth C. Parkes
Change in Facial Coloration in a Bushtit
Barbara Clark Mcknight
Covers
Front Matter
The Auk
Back Matter
The Auk