"Avian Endocrinology" provides a definitive and comprehensive review of all aspects relating to hormones in birds, both wild and domestic. It is the latest in a series of volumes published in association with the quadrennial meetings of the International Society for "Avian Endocrinology". Each chapter is written by leading researchers in the field from around the world and presents an in-depth and up-to-date review and analysis of the subject matter. The volume deals with: Behavioral endocrinology: endocrine mechanisms controlling behaviour in different life cycle strategies; Roles of testosterone: synthesis within the brain of hormones controlling behaviour and how it is regulated; control of song production: Circadian rhythm city and photoperiodic control of seasonal cycles. It offers different aspects of reproduction, from gonadal differentiation and gonadal function through control of egg size to the roles of and control of appetite and osmoregulation. (Which is not without controversy due to the use of Leptin in appetite control in mammals). It covers endocrine control of stress and immune function.