Contents
Variability in Transcribed Regions of Ribosomal Dna and Early Divergences in Birds
David P. Mindell and Rodney L. Honeycutt
100 Years Ago in the Auk
The Auk
Energetics of Reproduction in Female Kestrels
Theo Meijer, Dirkjan Masman, and Serge Daan
Territorial and Nonterritorial Settling in Juvenile Eurasian Nuthatches (sitta Europaea L) in Summer
Erik Matthysen
The Effects of Site Quality on Breeding-site Fidelity in Bobolinks
Eric K. Bollinger and Thomas A. Gavin
Phylogeny of the Cranes (aves: Gruidae) as Deduced from Dna-dna Hybridization and Albumin Micro-complement Fixation Analyses
James L. Ingold, Jack C. Vaughn, Sheldon I. Guttman, and Linda R. Maxson
Phylogenetic Relationships among Cranes (gruiformes: Gruidae) Based on Dna Hybridization
Carey Krajewski
Lasting Effects of Wing Tags on Ring-billed Gulls
Linda K. Kinkel
Nesting Success of Five Ciconiiform Species in Relation to Water Conditions in the Florida Everglades
Peter C. Frederick and Michael W. Collopy
Evidence for Obligate Male Parental Care in Black-billed Magpies
Peter O. Dunn and Susan J. Hannon
Natural and Simulated Encounters Between Sympatric Black-capped Chickadees and Mountain Chickadees
Brad G. Hill and M. Ross Lein
The Relative Importance of Stress and Programmed Anorexia in Determining Mass Loss by Incubating Ancient Murrelets
Anthony J. Gaston and Ian L. Jones
Behavioral Differences in Nest Visits Between Male and Female Northern Mockingbirds
Randall Breitwisch, Natasha Gottlieb, and Julia Zaias
The Measurement of Overall Body Size in Birds
James D. Rising and Keith M. Somers
Digestive Responses of Temperate Birds Switched to Fruit or Insect Diets
Douglas J. Levey and William H. Karasov
Physiological Basis of Stomach Oil Formation in Leach's Storm-petrel (oceanodroma Leucorhoa)
Allen R. Place, Nina C. Stoyan, Robert E. Ricklefs, and Ronald G. Butler
On the Significance of Helping Behavior in Birds
J. David Ligon and Peter B. Stacey
In Memoriam: Oliver L Austin Jr
Mary H. Clench and J. William Hardy
In Memoriam: Donald S Farner
James R. King and L. Richard Mewaldt
In Memoriam: Frank W Preston
Harold F. Mayfield
In Memoriam: James Bond
Kenneth C. Parkes
In Memoriam: Yoshimaro Yamashina, 1900-1989
S. Dillon Ripley
In Memoriam: Nikolaas Tinbergen, 1907-1988
Robert W. Storer
In Memoriam: Klaus Immelmann, 1935-1987
Russell P. Balda
Index to Volume 106
The Auk
Covers
Front Matter
The Auk
Back Matter
The Auk
Short Communications
Evaluating Models of Crop Emptying in Hummingbirds
F. Reed Hainsworth
Incubation of Dead Eggs
Daniel Afik and David Ward
Himalayan Birds Face Uphill While Singing
Malcolm L. Hunter Jr.
Determinate Vs Indeterminate Laying in the House Sparrow
Ted R. Anderson
Polygyny in the Northern Saw-whet Owl
Jeffrey S. Marks, John H. Doremus, and Richard J. Cannings
Costs to Northern Orioles of Puncture-ejecting Parasitic Cowbird Eggs from Their Nests
Sievert Rohwer, Carol D. Spaw, and Eivin R
Early Nest Departure Does Not Improve the Survival of Lapland Longspur Chicks
Robert L. Mclaughlin and Robert D. Montgomerie
The Correct Citation and Spelling of Ptiliogonys and Type Locality of Ptiliogonys Cinereus
M. Ralph Browning
Intensity of Nest Defense in Indigo Buntings Increases with Stage and Not Number of Visits
David F. Westneat
Commentary
Consistency in the Scientific Name of the Zebra Finch
N. S. Clayton and T. R. Birkhead