RED DATA BOOK

A collection of the available information relative to Endangered and Threatened Species. Each volume contains colored loose-leaf information sheets arranged by species. The sheets are updated as the status of a species changes. Red sheets are used for those species that are endangered; amber for vulnerable; white for rare; green for out of danger; and gray for species that are indicated to be endangered, vulnerable, or rare, but with insufficient information to be properly classified. The book is maintained by the International Union for Conservation of Nature and Natural Resources.