1 Data analysis and the Design of Experiments in Ornithology. - 1. Introduction. - 2. Models: Verbal Empiric Theoretic. - 3. Confirmatory versus Exploratory Studies. - 4. Observational Versus Experimental Studies. - 5. Strength of Inference. - 6. Special Topics. - 7. Conclusions. - References. - 2 The Evolution of Reversed Sexual Dimorphism in Size: A Comparative Analysis of the Falconiformes of the Western Palearctic. - 1. Introduction. - 2. Methods. - 3. Predictions and Results. - 4. Discussion. - 5. Summary. - References. - 3 Vocal Dialects in Nuttall's White-Crowned Sparrow. - 1. Introduction. - 2. Description of the Song. - 3. Microgeographic Variation (i. e. Dialects) in the Song. - 4. Vocal Development. - 5. Dispersal and Mate Selection. - 6. Correlations between Song Dialect Markers and Electrophoretic Traits. - 7. Conclusions. - References. - 4 On the Nature of Genic Variation in Birds. - 1. Introduction. - 2. The Mutation-Drift Theory of Genic Variation. - 3. Intrapopulational Genic Variation. - 4. Interpopulational Genic Variation. - 5. Discussion. - References. - 5 Ecomorphology. - 1. Introduction. - 2. Methods. - 3. Results and Discussion. - 4. Conclusion. - References. - 6 Problems in Avian Classification. - 1. Introduction. - 2. A Satisfactory Classification. - 3. Why We Lack a Satisfactory Classification. - 4. Conclusions. - References. - 7 Syringeal Structure and Avian Phonation. - 1. Introduction. - 2. Sound Generation. - 3. Sound Modulation. - 4. Harmonics. - 5. Summary. - References. - 8 Assessment of Counting Techniques. - 1. Introduction. - 2. Scales of Abundance. - 3. Defining Objectives and Selecting an Appropriate Scale of Measurement. - 4. Bias in Counting Birds. - 5. The Methods. - 6. Conclusions. - 7. Recommendations. - References. - 9 Circadian Organization of the Avian Annual Cycle. - 1. Introduction. - 2. Circadian Migratory Activities. - 3. Photoperiodism and Associated Activities. - 4. Photosensitivity and Photorefractoriness. - 5. Conclusions and Projections. - References. - Author Index. - Bird Name Index. Language: English