Contents
Densities and Species Composition of Breeding Birds of a Creosotebush Community in Southern New Mexico
Ralph J. Raitt and Richard L. Maze
The Systematic Position of the Surfbird, Aphriza Virgata
Joseph R. Jehl Jr.
An Analysis of Twitch and Tonus Fibers in the Hatching Muscle
Walter J. Rock and Robert S. Hikida
Notes on the Royal Tern in Uruguay
Rodolfo Escalante
Endocrine Regulation of Body Weight in the Spotted Munia, Uroloncha Punctulata
Asha Chandola and J. P. Thapliyal
Behavior of the Swallow-tailed Gull of the Galapagos
Barbara K. Snow and D. W. Snow
News and Notes
The Condor
Publications Received
The Condor
Cooper Ornithological Society Statement of Assets and Fund Balances Resulting from Cash Transactions
The Condor
The Bulletin Board
The Condor
Pictorial Checklist of Colorado Birds
Alfred M. Bailey and Robert J. Niedrach
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Communications
Birds Observed on San Nicolas Island, California
William C. Townsend
Feeding-perching Behavior in the Mockingbird
Mike Charles Baker
Egg-eating by Galapagos Mockingbirds
Michael P. Harris
Interspecific Territoriality among Hummingbird Species
Martin L. Cody
Nests of the Red Warbler and Crescent-chested Warbler in Oaxaca, Mexico
Harold F. Mayfield
Anna's Hummingbirds Trained to Select Different Colors in Feeding
Nicholas E. Collias and Elsie C. Collias
Total Brood Mortality in Late-nesting Cliff Swallows
Woodbridge A. Foster
Capillariasis in the Gyrfalcon
D. O. Trainer, S. D. Folz, and W. M. Samuel
Breeding of Botteri's Sparrow (aimophila Botterii) in Arizona
Robert D. Ohmart
Standard Metabolism Comparisons Between Orders of Birds
Jerrold H. Zar
A Second Large Wintering Population of White-crowned Sparrows, Zonotrichia Leucophrys Gambelii, in Washington
R. Alan Lewis, Martin L. Morton, and Donald S. Farner
Yellow-billed Magpie Drowns Its Prey
Carol Finley Blackburn