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Songs Of The Fox Sparrow. Ii. Intra- And Interpopulation Variation, Dennis J. Martin May 1979

Body Weights Of Birds: A Review, George A. Clark Jr. May 1979

The Bulletin Board, The Condor May 1979

Eggshell Thickness Changes In Pacific Ocean Phaethontidae And Sulidae, Michael L. Morrison May 1979

Effect Of Nesting History On Egg Size In Eastern Bluebirds, Benedict C. Pinkowski May 1979

Behavioral Flexibility Of Pine Siskins In Mixed Species Foraging Groups, David F. Balph, Martha Hatch Balph May 1979

Diet Of The Snowy Owl In The Absence Of Small Mammals, Pamela L. Williams, Laurence G. Frank May 1979

Nesting Behavior Of Female White-Tailed Ptarmigan In Colorado, Kenneth M. Giesen, Clait E. Braun May 1979

A Seven-Egg Clutch For The Cooper's Hawk, David H. Ellis, Greg Depner May 1979

Front Matter (Pdf), The Condor Feb 1979

Back Matter (Pdf), The Condor Feb 1979

Fecal Sac Ingestion In The Mountain White-Crowned Sparrow, Martin L. Morton Feb 1979

Recent Publications, The Condor Feb 1979

First Record Of Leach's Storm-Petrel In Costa Rica: A Correction, Paul Slud Feb 1979

News And Notes, The Condor Feb 1979

Ornithology In The People's Republic Of China (Prc), Robert J. Grimm Feb 1979

Habitat And Resource Relationships In Acorn Woodpeckers, Robert C. Roberts Feb 1979

Wing Molt And Weights Of Barnacle Geese In Spitsbergen, Myrfyn Owen, M. A. Ogilvie Feb 1979

Metabolic Rate In Five Tropical Bird Species, Carol M. Vleck, David Vleck Feb 1979

On The Function Of Prey Beating By Roadrunners, Kathleen G. Beal, Linda D. Gillam Feb 1979

"Leader-Follower" Singing In Red-Winged Blackbirds, Douglas G. Smith, Douglas O. Norman Feb 1979

The Association Of Marine Birds And Feeding Gray Whales, Craig S. Harrison Feb 1979

Laying Dates, Clutch Size And Egg Weight Of Captive Mallards, Bruce D. Batt, Harold H. Prince Feb 1979

Comparative Population Bioenergetics Of Three Insectivorous Passerines In A Deciduous Forest, Richard T. Holmes, Craig Patrick Black, Thomas W. Sherry Feb 1979

Patterns Of Alpha-Diversity And Abundance In Breeding Bird Communities Across North America, Jeffrey J. Short Feb 1979

Adaptive Significance Of The Variable Dispersion Pattern Of Breeding Northern Orioles, Barbara Yohai Pleasants Feb 1979

Observations On Distribution, Diet, And Breeding Of The Hawaiian Thrush, Charles Van Riper Iii, J. Michael Scott Feb 1979

Graded Frequency Variations Of The Tremolo Call Of The Common Loon (Gavia Immer), William E. Barklow Feb 1979

Probable Non-Breeders Among Female Blue Grouse, Susan J. Hannon, Fred C. Zwickel Feb 1979

The Bulletin Board, The Condor Feb 1979