Description: List of Illustrations List of Tables Preface 1. The Variation Problem Introduction Darwin's Finches Theoretical Framework Scope and Organization of the Study Duration of the Study Organization of the Book Summary 2. The Island Setting The Physical Environment Climate Vegetation Plant Phenology Animals Age of the Community Summary 3. Demography: Survival Introduction Sources and Study Areas Birds of Known Age Birds of Unknown Age The Initial Group of Adults Individual Cohorts A Synthetic Survivorship Curve Environmental Determinants of Survival Age Structure of the Breeding Population Comparative Demography Summary 4. Demography: Reproduction Introduction Timing The Rate of Reproduction The Amount of Reproduction Effects of Age and Experience Individual Variation Lifetime Reproductive Success Summary 5. Survival and Reproduction Introduction Survival and Reproduction Comparative Demography Summary 6. Songs and Territories Introduction Song Structure Transmissions of Song Territories and the Role of Song Song and Breeding Song Type, Mate Choice, and the Distribution of Territories The Role of Song in Species, Individual, and Kin Recognition Origin and Maintenance of the Two Song Types Summary 7. Mate Choice Introduction The Mating System: Mainly Monogamy Courtship, Pairing, and Parental Care The Choosing Sex Cues Used in Mate Choice Courtship Behavior and Experience Extra-pair Copulations Mate Changes Synthesis Summary 8. Phenotypic and Genetic Variation Introduction Morphological Variation Genetic Variation Heritability When Are Offspring Fully Grown? Estimates of Heritability Potential Distortions to the Estimates Genotype-Environment Correlations The Expression of Genetic Variation during Ontogeny Genetic Correlations among Traits Discontinuous Variation: A Beak Color Polymorphism Summary 9. Hybridization and Selection Introduction Introgression Effects of Interbreeding on Morphological Variance Selection Dry-Season Survival Reproduction Directional Stabilizing Selection The Maintenance of Variation Summary 10. Population Subdivision and Sympatric Speciation Introduction The Initial Observations Subsequent Observations How the Population Became Subdivided Sympatric Speciation? Population Subdivision Summary 11. The Place of G. conirostris in Its Community Introduction Evolutionary History Community Ecology Some Speculations on Evolution and Competition The Populations on Espaola and Gardner Summary 12. Summary, Synthesis, and Some Implications for Conservation Introduction Synthesis Implications for Conservation Appendixes I. Scientific Names of the Bird Species II. Annual Summaries of Reproductive Characteristics III. Demographic Characteristics of A Males and B Males IV. Effective Population Size and Neighborhood Size V. Nestling Beak Color Morphs Produced by A Males and B Males References Author Index Subject Index

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