Contents: Introduction: Charles Darwin, After Darwin, The First Synthesis, & Evolutionary Interference; Characteristics of the Islands; General Characteristics & Distributions of Finches; Patterns of Morphological Variation; Growth & Development; Beak Sizes, Beak Shapes, & Diets; Importance of Food to Finch Populations; Population Variation & Natural Selection; Species-Recognition & Mate Choice; Evolution & Speciation; Ecological Interactions during Speciation; Competition & Finch Communities; Evolution of Reproductive Isolation; Adaptation: Body Size, Plumage & Coloration; Reconstruction of Phylogeny; Recapitulation & Generalization. Appendix: Spanish & English Names of the Major Galapagos Islands. Color plates.