Contents
Notes on the Biology and Population Status of the Monkey-eating Eagle of the Philippines
Robert S. Kennedy
Cowbird Parasitism and Egg Recognition of the Northern Oriole
Stephen I. Rothstein
Observations on the Red-necked Grebe Nesting in Michigan
Michael L. Chamberlin
Social Dominance in Winter Flocks of Cassin's Finch
Fred B. Samson
Inter-brood Movements of Juvenile Spruce Grouse
Daniel M. Keppie
Breeding Biology of Year-old and Older Female Red-winged and Yellow-headed Blackbirds
Richard D. Crawford
Food Habits of Oldsquaws Wintering on Lake Michigan
Steven R. Peterson and Robert S. Ellarson
Sexual Dimorphism in the White Ibis
James A. Kushlan
Eggshell Thickness Variability in the White-faced Ibis
David E. Capen
Characteristics of a Wintering Population of White-tailed Ptarmigan in Colorado
Richard W. Hoffman and Clait E. Braun
Breeding Densities and Migration Periods of Common Snipe in Colorado
Bruce R. Johnson and Ronald A. Ryder
Principal Component Analysis of Woodpecker Nesting Habitat
Richard N. Conner and Curtis S. Adkisson
Phenetic Analysis of the Subfamily Cardinalinae Using External and Skeletal Characters
Jenna J. Hellack and Gary D. Schnell
Ornithological News
Wilson Bulletin
Ornithological Literature
Wilson Bulletin
Covers
Back Matter (PDF)
Wilson Bulletin
Front Matter (PDF)
Wilson Bulletin
General Notes
Why Ospreys Hover
Thomas C. Grubb Jr.
Storage of Pinon Nuts by the Acorn Woodpecker in New Mexico
Peter B. Stacey and Roxana Jansma
Flocking and Foraging in the Scarlet-rumped Tanager
David J. Moriarty
Yellow Warbler Nest Used by a Least Flycatcher
J. Paul Goossen
Ticks as a Factor in the 1975 Nesting Failure of Texas Brown Pelicans
Kirke A. King, David R. Blankinship, and Richard T. Paul
Prairie Warbler Feeds from Spider Web
John F. Douglass
Nest-site Differences Between Red-headed and Red-bellied Woodpeckers in South Carolina
Lawrence Kilham
Ground Foraging and Rapid Molt in the Chuck-will's-widow
Sievert Roiiwer and James Butler
Feeding Responses of Fall Migrants to Prolonged Inclement Weather
Elliot J. Tramer and Flora E. Tramer
Southbound Migration of Shorebirds from the Gulf of St. Lawrence
Raymond Mcneil and Jean Burton
Flocking and Foraging Behavior of Brown Jays in Northeastern Mexico
Michael L. Morrison and R. Douglas Slack
Mortality of Nestling Mississippi Kites by Ants
James W. Parker