Contents
In Memoriam: Glover Morrill Allen
Winsor Marrett Tyler
Some Irrelevant Behavior in Birds
A. L. Rand
Nesting Habits of the Yellow Rail in Gasp
L. Mci. Terrill
Breeding Habits of Mccown's Longspur
Frances Welton Mickey
Weights and Plumages of the Horned Larks of Central New York
William Montagna
Weights of Some Western Subspecies of Horned Larks
William H. Behle
Bird Weights and Egg Weights
Dean Amadon
A Systematic Study of the Main Arteries in the Region of the Heart, Aves Vi Trogoniformes, Part 1
Fred H. Glenny
Hearing Ranges of Four Species of Birds
Ernest P. Edwards
Critical Notes on Two Southwestern Sparrows
Allan R. Phillips
New Species of Birds Described from 1938 to 1941
John T. Zimmer and Ernst Mayr
A New Horned Lark from the State of Washington
Stanley G. Jewett
Recent Literature
The Auk
Correspondence
The Auk
Notes and News
The Auk
Obituaries
The Auk
General Notes
Outer Primaries as Age Determiners in Gallinaceous Birds
Philip L. Wright and Robert W. Hiatt
Two Oddly-plumaged Ruffed Grouse
Leonard J. Uttal
A Peculiar Goshawk from Labrador
Josselyn Van Tyne
A New Swallow-shrike
Ernst Mayr
The Name of the Sumatran Crested Olive Bulbul
S. Dillon Ripley
Chimney Swifts at Play?
Stanley C. Ball
Bank Swallows Nesting in Artificial Holes
P. A. D. Hollom
Post-breeding Pugnacity of the Pine Warbler
Robert E. Stewart
Birds and Smell
Paul Bartsch
The Incubation Period of the Great Horned Owl
Arthur K. Gilkey, W. David Loomis, Bruce M. Breckenridge, and C. Howard Richardson
Raven Eats Mormon Cricket Eggs
G. F. Knowlton
Spring Food of the Robin in Central New York
W. J. Hamilton Jr.
Duck Hawk Eyries in Southern States
Richard Herbert, Roger T. Peterson, and Walter R. Spofford
Duck Hawk at Sea
D. S. Bullock
Notes on the Status of the Red Crossbill in Utah
C. Lynn Hayward
Additional Bird Records for Grand Canyon National Park
William H. Behle and Edwin D. Mckee
Notes on Two Rare Birds in Chiapas, Mexico
Pierce Brodkorb
Nesting of the Southern Robin in Northwestern Alabama
F. W. Mccormack
Notes on Some Ducks Collected in Kentucky
Burt L. Monroe and Robert M. Mengel
Krider's Hawk in Kentucky
Burt L. Monroe and Robert M. Mengel
Hoary and Greater Redpolls in Vermont
Wendell P. Smith
Clark's Nutcracker in Northwestern Michigan
Walter T. Fisher
European Teal in Maine
Arthur H. Norton
Yellow-billed Tropic-bird in Maine
Arthur H. Norton
A Method of Remaking Old Bird Skins
J. Dewey Soper
A Correction
Clarence Cottam
Covers
Front Matter
The Auk
Back Matter
The Auk