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Summer Biology of the Gadwall at Delta, Manitoba
Vol 81, Iss 1, Page 44, Date 1969
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The Radius and Relationship of Owls
Vol 81, Iss 1, Page 55, Date 1969
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Responses of Blue-Winged Warblers and Golden-Winged Warblers to Their Own and the Other Species' Song
Vol 81, Iss 1, Page 69, Date 1969
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Territorial Stability in Sharp-Tailed Grouse
Vol 81, Iss 1, Page 75, Date 1969
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Hatching Behavior of the Bobwhite
Vol 81, Iss 1, Page 79, Date 1969
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Behavioral Ontogeny of the Mockingbird
Vol 81, Iss 1, Page 87, Date 1969
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A Case of Turkey Vulture Piracy on Great Blue Herons
Vol 81, Iss 1, Page 94, Date 1969
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Ornithological News
Vol 81, Iss 1, Page 109, Date 1969
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Life Histories of Central American Highland Birds by Alexander F. Skutch
Vol 81, Iss 1, Page 110, Date 1969
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Sharp-Shinned Hawk Migration in the Northeastern United States
Vol 81, Iss 1, Page 119, Date 1969
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A Study of the Rufous-Fronted Thornbird and Associated Birds: Part II: Birds Which Breed in Thornbirds' Nests
Vol 81, Iss 2, Page 123, Date 1969
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Some Aspects of the Ecology of Migrant Shorebirds. II. Aggression
Vol 81, Iss 2, Page 140, Date 1969
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Movements, Population Fluctuations, and Mortality among Great Horned Owls
Vol 81, Iss 2, Page 155, Date 1969
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Notes on Song Structure in the Townsend's Solitaire
Vol 81, Iss 2, Page 163, Date 1969
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Reproductive Behavior of Hairy Woodpeckers. III. Agonistic Behavior in Relation to Courtship and Territory
Vol 81, Iss 2, Page 169, Date 1969
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Life History of the Red Warbler
Vol 81, Iss 2, Page 184, Date 1969
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Publication Notes and Notices
Vol 81, Iss 2, Page 195, Date 1969
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Sexual and Agonistic Behavior of the Common Rhea
Vol 81, Iss 2, Page 196, Date 1969
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Ornithological News
Vol 81, Iss 2, Page 224, Date 1969
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Three Papers on Variation in Flickers (Colaptes)
Vol 81, Iss 2, Page 225, Date 1969
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Publication Notes and Notices
Vol 81, Iss 2, Page 232, Date 1969
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Spring Migration and Weather at Madison, Wisconsin
Vol 81, Iss 3, Page 235, Date 1969
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Pre-Nesting and Nesting Behavior of the Swainson's Warbler
Vol 81, Iss 3, Page 246, Date 1969
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Tower-Killed Specimens and Observations of Migrant Birds from Grand Bahama Island
Vol 81, Iss 3, Page 258, Date 1969
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Observations of Birds Exploiting a Central American Fruit Tree
Vol 81, Iss 3, Page 264, Date 1969
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Oral Flanges of Juvenile Birds
Vol 81, Iss 3, Page 270, Date 1969
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Variation in Major Body Components of the Tree Sparrow (Spizella arborea) Sampled within the Winter Range
Vol 81, Iss 3, Page 280, Date 1969
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Territorial Behavior and Population Regulation in Birds: A Review and Re-Evaluation
Vol 81, Iss 3, Page 293, Date 1969
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Publication Notes and Notices
Vol 81, Iss 3, Page 342, Date 1969
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Ornithological News
Vol 81, Iss 3, Page 343, Date 1969
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Publication Notes and Notices
Vol 81, Iss 3, Page 352, Date 1969
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Proceedings of the Fiftieth Annual Meeting
Vol 81, Iss 3, Page 353, Date 1969
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On the Behavior of Five Species of Rhegmatorhina, Ant-following Antbirds of the Amazon Basin
Vol 81, Iss 4, Page 363, Date 1969
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Reproductive Success of the Wood Thrush in a Delaware Woodlot
Vol 81, Iss 4, Page 396, Date 1969
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Physiological Susceptibility of Robins to DDT Poisoning
Vol 81, Iss 4, Page 407, Date 1969
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Annual Activity Patterns of Caged Non-Migratory White-Crowned Sparrows
Vol 81, Iss 4, Page 419, Date 1969
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Energy Responses of Birds to Their Thermal Environments
Vol 81, Iss 4, Page 441, Date 1969
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Mortality of Coots during Severe Spring Weather
Vol 81, Iss 4, Page 450, Date 1969
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Unusual Nesting Habitats of Three Bird Species in Rondeau Provincial Park, Ontario
Vol 81, Iss 4, Page 454, Date 1969
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Ornithological News
Vol 81, Iss 4, Page 473, Date 1969
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Publication Notes and Notices
Vol 81, Iss 4, Page 481, Date 1969