Contents
The Relation of Breeding Schedule and Clutch Size to Food Supply in the Rufous-sided Towhee
Jon S. Greenlaw
Nesting Responses of Field Sparrows (spizella Pusilla) to Plant Succession on a Michigan Old Field
Edward W. Evans
Oscine Spermatozoa: a Light - and Electron-microscopy Study
Catherine Henley, Alan Feduccia, and Donald P. Costello
Vocalizations of Scaled Quail
Water L. Anderson
The Breeding Ecology of Sea Birds on Monito Island, Puerto Rico
Cameron B. Kepler
Hunting and the Energy Budget of the Black-shouldered Kite
Warwick R. Tarboton
Recent Publications
The Condor
News and Notes
The Condor
The Bulletin Board
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Daily Song Patterns in Golden-crowned Sparrows at 62 Degrees N Latitude
Warren G. Holmes and Susan J. Dirks
Effects of Altered Photoperiod on Migratory Orientation in White-throated Sparrows (zonotrichia Albicollis)
Larry J. Miller and Charles M. Weise
Territory Size in the White-crowned Sparrow (zonotrichia Leucophrys): Measurement and Stability
Thomas L. Patterson and Lewis Petrinovich
Polygyny in the White-crowned Sparrow (zonotrichia Leucophrys)
Lewis Petrinovich and Thomas L. Patterson
Feather Papillae in the Incubation Patches of House Sparrows
G. K. Menon, M. B. Jani, and R. V. Shaii
Wing Molt in Female Ruddy Ducks
David E. Joyner
The Dwarf Cuckoo in Venezuela
Betsy Trent Thomas
Common Terns Raise Young After Death of Their Mates
Jan C. Nisbet, Karen J. Wilson, and William A. Broad
Desertion of Nests by Blue Grouse
Fred C. Zwickel and Robert G. Carveth
Use of Interstate Highway Cuts as Starling Nesting Sites
Edwin D. Michael and Courtis Taylor
The Status of Sericornis Nigroviridis
Bruce Beehler