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Introduction Evolution, Genetic Basis, and Extent of Bird Migration History of Bird Migration Studies Current Methods of Studying Bird Migration the Phenomena of Bird Migration Physiological Bases and Control of Bird Migration Orientation Mechanisms Synopsis: Course and Control of Migration of a Typical Long-Distance Migrant Passerine Threats and the Conservation and Future of Migrants Evolutionary Aspects of Bird Migration in the Future the Significance of Bird Migration for Human Society Outlook
A Tue, study studied this question.