Bird Hormones and Bird Migrations

Analyzing Hormones in Droppings and Egg Yolks and Assessing Adaptations in Long-Distance Migration

af Goymann

The analysis of hormones in feces or excrement presented in the first part of this volume is a relatively new noninvasive method for gaining insight into an animal's physiology. Endocrinological cycles of free-living animals can be studied without the stress caused by capture.