Title: PTILOCHRONOLOGY: FEATHER TIME AND THE BIOLOGY OF BIRDS
Description: "This is the first book to summarize the methods, conceptual issues and results of studies using the interpretation of feather growth rates as an index of nutritional condition in birds. The author has coined the term ptilochronology (literally, 'the study of feather time') to describe this technique, which relies on the fact that as a feather grows it produces visible growth bars."--Jacket.
Subjects: Birds, Ptilochronology, Development, Growth, Nutrition, Requirements, Feathers, Analysis, Research