The Red List is nicknamed the “barometer of life”, for it is a rich compendium of information on the threats to species, their ecological requirements, where they live, and information on conservation actions that can be taken to reduce their risk of extinction.

The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction. It divides species into nine categories: Not Evaluated, Data Deficient, Least Concern, Near Threatened, Vulnerable, Endangered, Critically Endangered, Extinct in the Wild and Extinct.

The IUCN Red List of Threatened Species™ is the world’s most comprehensive information source on the global extinction risk status of animal, fungus and plant species. Open to all, it is used by governmental bodies, non-profit organisations, businesses and individuals.

Red List Index (RLI) The Red List Index (RLI) shows trends in overall extinction risk for species, and is used by governments to track their progress towards targets for reducing biodiversity loss.

2025年1月9日 · Birds have been assessed for the IUCN Red List for longer and more frequently than any other group, so BirdLife rose to the challenge and led an international effort to solve this problem 20 years ago. Andean Condor has changed category on the IUCN Red List twice since 1988, moving from Least Concern to Near Threatened in 2000 and most recently ...

The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological species. [1] A series of Regional Red Lists, which assess the risk of extinction to species within a political management unit, are also …

The IUCN Red List Index (RLI) for birds tracks the movement of species through categories of extinction risk. It reveals a steady and ongoing deterioration in the status of the world’s species since the first comprehensive global assessment in 1988 ( ).

The IUCN Red list is the world's most comprehensive list of information on the extinction risk to animals, plants and fungi. BirdLife International is the IUCN Red List Authority for birds.

2009年5月13日 · The IUCN Red List now lists 192 species of bird as Critically Endangered, the highest threat category, a total of two more than in the 2008 update.

There are 683 avian species which are endangered or critically endangered. Additionally 53 avian species (0.48% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status.