Regionwide Polygyny in Willow FlycatchersJames A. Sedgwick and Fritz L. Knopf · The Condor · 1989

Regional Correspondence among Shrubsteppe Bird HabitatsFritz L. Knopf, James A. Sedgwick and Douglas B. Inkley · The Condor · 1990

The Loss of Avian Cavities by Injury CompartmentalizationJames A. Sedgwick and Fritz L. Knopf · The Condor · 1991

Cavity Turnover and Equilibrium Cavity Densities in a Cottonwood BottomlandJames A. Sedgwick and Fritz L. Knopf · The Journal of Wildlife Management · 1992

Breeding Bird Response to Cattle Grazing of a Cottonwood BottomlandJames A. Sedgwick and Fritz L. Knopf · The Journal of Wildlife Management · 1987

Latent Population Responses of Summer Birds to a Catastrophic, Climatological EventFritz L. Knopf and James A. Sedgwick · The Condor · 1987

An Experimental Study of Nest-Site Selection by Yellow WarblersFritz L. Knopf and James A. Sedgwick · The Condor · 1992

Anatomical Variation and Avian AnatomyAndrew J. Berger · The Condor · 1956

The Metabolic Rate of Tropical BirdsC. J. Hails · The Condor · 1983

The Incubation Patch in TinamousRobert E. Bailey · The Condor · 1955

Species Concepts in OrnithologyMary C. McKitrick and Robert M. Zink · The Condor · 1988

Body Weights of Birds: A ReviewGeorge A. Clark, Jr. · The Condor · 1979

Biology of Marine BirdsSYDEMAN, WILLIAM J. · The Condor · 2003

Nest Site Selection in Mountain BluebirdsChristopher J. Herlugson · The Condor · 1981

Notes on Brazilian CracidaeHelmut Sick · The Condor · 1970