Contents
Host Selection by the Shiny Cowbird
James W. Wiley
Seasonal Variation in Gray Partridge Vocal Behavior
Jay J. Rotella and John T. Ratti
A Comparative Study of the Breeding Ecology of Harris' and Swianson's Hawks in Southeastern New Mexico
James C. Bednarz
Parental Investment in Herring Gulls; Clutch Apportionment and Chick Survival
Percy N. Hebert and Robert M. Barclay
Mechanisms of Egg Acceptance by Marsh-dwelling Blackbirds
Catherine P. Ortega and Alexander Cruz
Birds Lost from a Giant Sequoia Forest during Fifty Years
Joe T. Marshall
A New Function for Torpor: Fat Conservation in a Wild Migrant Hummingbird
F. Lynn Carpenter and Mark A. Hixon
Age, Plumage Brightness, Territory Quality, and Reproductive Success in the Black-headed Grosbeak
Geoffrey E. Hill
Site Fidelity of Least Terns in California
Jonathan L. Atwood and Barbara W. Massey
Creching Behavior of Brandt's Cormorant Chicks
Harry R. Carter and Heith A. Hobson
A Comparison of Transects and Spot Mapping in Oak-pine Woodlands of California
Jared Verner and Lyman V. Ritter
Water as a Habitat Cue for Breeding Swap and Song Sparrows
Russel Greenberg
Genetic Evidence for Relationships in the Avian Family Vireonidae
Ned K. Johnson, Robert M. Zink, and Jill M. Marten
Intraspecific Variation in Plastic Ingestion by Seabirds and the Flux of Plastic through Seabird Populations
Peter G. Ryan
Avian Communal Roosting: a Test of the Patch-sitting" Hypothesis"
Donald F. Caccamise and Douglas W. Morrison
Bioenergetics of Breeding Northern Shovelers: Diet, Nutrient Reserves, Clutch, Size, and Incubation
C. Davison Ankney and Alan D. Afton
Geographic Variation in the Yellow-billed Cuckoo
Richard C. Banks
Book Reviews
Marcy F. Lawton
New and Notes
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Commentary
Adaptive Disposal of Fecal Sacs
Patrick J. Weatherhead
Reply to Weatherhead: a Problem of Interpreting Stated Hypotheses Rather Than Intention""
Daniel R. Petit and Lisa J. Petit
Short Communications
High Nest Predation by Brown Tree Snakes on Guam
Paul J. Conry
Facultative Migration in Yellow-eyed Juncos
Eric G. Horvath and Kimberly A. Sullivan
Navigation to Nest Site in the Snow Petrel (pagodroma Nivea)
Svein Haftorn, Fridtjof Mehlum, and Claus Bech
Imitations of White-crowned Sparrow Songs by a Song Sparrow
Luis F. Baptista
Nest Cooling and Recess Length of Incubating Spruce Grouse
Brian J. Naylor, Kandyd J. Szuba, and James F. Bendell
Nonterritorial Males in Populations of Spruce Grouse
Kandyd J. Szuba and James F. Bendell
Movement and Calling Behavior of the Lined Forest-falcon (micrastur Gilvicollis) in the Brazilian Amazon
Bert C. Klein and Richard O. Bierregaard
Suggestions Regarding Alcoholic Bird Collections
Peter F. Cannell, Murray R. Bakst, and Cheryl S. Asa
Scrub Jay Predation on Starlings and Swallows: Attack and Interspecific Defense
Paul R. Ehrlich and John F. Mclaughlin
New Bird Records from the Galapagos Associated with the El Nino-southern Oscillation
Robert L. Curry and Scott H. Stoleson
Flight Whistle Incorporated in Brown-headed Cowbird Song
Alfred M. Dufty Jr.
Scanning Behavior of Finches in Mixed-species Groups
James W. Popp
Notes from Clarion Island
William T. Everett
Evidence for Intraspecific Brood Parasitism in the House Wren
Jaroslav Picman and Jean-Claude Belles-Isles