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Characteristics Of A Wintering Population Of White-Tailed Ptarmigan In Colorado, Richard W. Hoffman, Clait E. Braun Mar 1977

Principal Component Analysis Of Woodpecker Nesting Habitat, Richard N. Conner, Curtis S. Adkisson Mar 1977

Phenetic Analysis Of The Subfamily Cardinalinae Using External And Skeletal Characters, Jenna J. Hellack, Gary D. Schnell Mar 1977

Storage Of Pinon Nuts By The Acorn Woodpecker In New Mexico, Peter B. Stacey, Roxana Jansma Mar 1977

Pintail Reproduction Hampered By Snowfall And Agriculture, Gary L. Krapu Mar 1977

Back Matter (Pdf), Wilson Bulletin Mar 1977

Breeding Densities And Migration Periods Of Common Snipe In Colorado, Bruce R. Johnson, Ronald A. Ryder Mar 1977

Ornithological Literature, Wilson Bulletin Mar 1977

Yellow Warbler Nest Used By A Least Flycatcher, J. Paul Goossen Mar 1977

Notes On The Hummingbirds Of Monteverde, Cordillera De Tilaran, Costa Rica, Peter Feinsinger Mar 1977

Ground Foraging And Rapid Molt In The Chuck-Will's-Widow, Sievert Roiiwer, James Butler Mar 1977

Eggshell Thickness Variability In The White-Faced Ibis, David E. Capen Mar 1977

Flocking And Foraging In The Scarlet-Rumped Tanager, David J. Moriarty Mar 1977

Ticks As A Factor In The 1975 Nesting Failure Of Texas Brown Pelicans, Kirke A. King, David R. Blankinship, Richard T. Paul Mar 1977

Southbound Migration Of Shorebirds From The Gulf Of St. Lawrence, Raymond Mcneil, Jean Burton Mar 1977

Flocking And Foraging Behavior Of Brown Jays In Northeastern Mexico, Michael L. Morrison, R. Douglas Slack Mar 1977

Do More Birds Produce Fewer Young? A Comment On Mayfield's Measure Of Nest Success, Richard F. Green Mar 1977

Prairie Warbler Feeds From Spider Web, John F. Douglass Mar 1977

Mortality Of Nestling Mississippi Kites By Ants, James W. Parker Mar 1977

Feeding Responses Of Fall Migrants To Prolonged Inclement Weather, Elliot J. Tramer, Flora E. Tramer Mar 1977

Notes On The Biology And Population Status Of The Monkey-Eating Eagle Of The Philippines, Robert S. Kennedy Mar 1977

Why Ospreys Hover, Thomas C. Grubb Jr. Mar 1977

Ornithological News, Wilson Bulletin Mar 1977

Nest-Site Differences Between Red-Headed And Red-Bellied Woodpeckers In South Carolina, Lawrence Kilham Mar 1977

Front Matter (Pdf), Wilson Bulletin Mar 1977

Breeding Biology Of Year-Old And Older Female Red-Winged And Yellow-Headed Blackbirds, Richard D. Crawford Mar 1977

Sexual Dimorphism In The White Ibis, James A. Kushlan Mar 1977

Woodpecker Dependence On Trees Infected By Fungal Heart Rots, Richard N. Conner, Orson K. Miller Jr., Curtis S. Adkisson Dec 1976

Variation In Cadence Of Field Sparrow Songs, Donald B. Heckenlively Dec 1976

Food Habits Of Ring-Billed Gulls Breeding In The Great Lakes Region, William L. Jarvis, William E. Southern Dec 1976