contents -- list of figures and tables -- Foreword by Noel Snyder -- Preface -- Chapter 1: Background -- Evolution and Life History -- A Brief History of the Condor Recovery Program -- Bringing Condors Back to the Pacific Northwest -- Chapter 2: Historical Distribution of California Condors: A Review of the Evidence -- Prehistoric Distribution and Pleistocene Range Contraction -- Archaeological and Paleontological Record -- California Condors in Pacific Northwest Native American Culture -- Observation and Collection of California Condors by Naturalists, Explorers, and Settlers -- Summary of Historical Distribution -- Chapter 3: Historical Movement Patterns -- Evolution of Migration in Vultures of the World -- Modern California Condor Movement Studies -- Seasonality of Occurrence Records in the Pacific Northwest -- Summary of Historical Movement Patterns -- Chapter 4: Timing and Causes of the Condor's Range Collapse -- Population Decline -- Secondary Poisoning -- Lead Poisoning -- DDT, DDE, and Eggshell Thinning -- Collecting and Shooting -- Egg Collecting -- Loss of Nesting Habitat -- Native American Ritual Killings -- Food Increases in Central and Southern California -- Reductions in Food Availability -- Salmon -- Whales -- Seals and Sea Lions -- Native Ungulates -- Livestock -- Summary of Changes to the Condor's Food Supply -- Summary of the Plausible Causes of Extinction in the Pacific Northwest -- Chapter 5: Summary and Future Outlook -- Reintroductions: Challenges and Opportunities -- Literature Cited -- Appendix -- Index.