Contents
Geographic Variation in Vocalizations and Evolution of North American Pine Grosbeaks
Curtis S. Adkisson
A Comparison of Vocalizations of Western Gulls (larus Occidentalis Occidentalis and L. O. Livens)
Judith Latta Hand
Roost Selection by Spotted Owls: an Adaptation to Heat Stress
Cameron W. Barrows
Recent Publications
The Condor
Nest Site Selection in Eastern and Western Kingbirds: a Multivariate Approach
David I. Mackenzie and Spencer G. Sealy
Mate Change and Reproductive Success in the Lesser Snow Goose
F. Cooke, M. A. Bousfield, and A. Sadura
Wintering Ecology of Thrashers in Southern Texas
David H. Fischer
Bird Populations Before and After Wildfire in a Great Lakes Pine Forest
Steven Apfelbaum and Alan Haney
Respiratory Gas Exchange and Growth of White Tern Embryos
Ted N. Petit, Gilber S. Grant, G. Causey Whittow, Hermann Rahn, and Charles V. Paganelli
Comparative Patterns of Nestling Growth in White-crowned Sparrows
James R. King and Joel D. Hubbard
Mobbing Calls of the Phainopepla
Daniel W. Leger and Laura F. Carroll
News and Notes
The Condor
The Bulletin Board
The Condor
Index to Volume 83
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Yolk Formation and Oviposition in Captive Emus
Katherine V. Hirsch and C. R. Grau
Adaptive Significance of Ear Tufts in Owls
Michael Perrone Jr.
What is the Song of the Black-capped Chickadee?
Millicent S. Ficken
First Nesting Record of the Peregrine Falcon in Ecuador
J. Peter Jenny, Fernando Ortiz, and Michael D. Arnold
Nest Predation of Abert's Towhees by Coachwhips and Roadrunners
Deborah M. Finch