1. Avian primordial germ cells -- 2. Sex-determingin mechanism in avians -- 3. Female reproductive system and immunology -- 4. Development and preservation of avian sperm -- 5. Avian egg and egg coat -- 6. Fertilization 1: sperm-egg interaction -- 7. Fertilization 2: polyspermic fertilizations -- 8. Molecular and neuroendocrine mechanisms of avian seasonal reproduction -- 9. Hormonal responses to a potential mate in male birds -- 10. Neuroendocrine control of broodiness -- 11. Sperm storage in the female reproductive tract: a conserved reproductive strategy for better fertilization success -- 12. Avian biotechnology.