Contents
Contribution to the Life History of the Swallow-tanager
Ernst Schaefer
Observations of the Short-tailed Hawk in Florida
Joseph C. Moore, Louis A. Stimson, and William B. Robertson
A Fossil Hoatzin from the Miocene of Colombia
Alden H. Miller
Notes and News
The Auk
Recent Literature
The Auk
Obituaries
The Auk
Index to Volume 70
The Auk
General Notes
Mallard Nesting in Maine
Malcolm W. Coulter
Further Information on the Turkey Vulture (cat Hartes Aura) in New England and Eastern Canada
Aaron M. Bagg and Henry M. Parker
The Ruddy Turnstone (arenaria Interpres) at Beach Haven, New Jersey, in August, 1950
Frederick V. Hebard
Breeding Notes on Two Panamanian Antbirds
R. A. Johnson
Winter Feeding of the Red-wing (agelaius Phoeniceus)
Richard B. Fischer
Surgery for Sexing and Observing Gonad Condition in Birds
Robert E. Bailey
Covers
Front Matter
The Auk
Back Matter
The Auk