This text offers comprehensive coverage of avian biology: systematics, physiology, ecology, and behavior with expanded material on physiology and ecology. Expanded artwork includes detailed drawings, graphs, and diagrams.

1. Birds as Flying Machines

2. The Kinds of Birds

3. Skin, Scales, Feathers, and Colors

4. Bones and Muscles

5. Brain, Nerves, and Sense Organs

6. Food, Digestion, and Feeding Habits

7. Blood, Air, and Heat

8. Excretion, Reproduction, and Photoperiodism

9. Behavior

10. Social Behavior

11. Songs, Calls, and Other Sounds

12. Territory

13. Courtship and Mating Habits

14. Nests

15. Eggs

16. Incubation and Brood Parasitism

17. The Care and Development of Young

18. The Numbers of Birds and Their Regulation

19. The Ecology of Birds

20. The Geography of Birds

21. Flight

22. Migration and Orientation

23. The Origin and Evolution of Birds

24. Birds and Man

References
Index