The IUCN  Red List provides the conservation status of plant and animal species around the world. It assigns a specific category to each of the evaluated species. The categories are as follows:

  - Extinct                               (EX)  -  Beyond reasonable doubt that the species is no longer extant. 

  -  Extinct In The Wild    (EW) -  Known only to survive in captivity, or as a naturalized population outside its historic range.

  -  Critically endangered (CR)  -  At a very high risk of extinction.

  -  Endangered                      (EN)  -  High risk of extinction in the wild.

  -  Vulnerable                        (VU) -  High risk of endangerment in the wild.

  -  Near threatened             (NT) -  Likely to become endangered in the near future.

  -  Least concern                   (LC)  -  Lowest risk. Does not qualify for a more at-risk category

  -  Data deficient                   (DD) -  Not enough data to make an assessment of its risk of extinction.

  -  Not evaluated                   (NE)  -  Has not yet been evaluated against the criteria.

Some links for further information and facts, for example:

- https://www.iucnredlist.org/resources/categories-and-criteria or

- http://datazone.birdlife.org/species/search or

- IUCN Classification : Critically Endangered, Endangered and Vulnerable (clearias.com) or

- http://datazone.birdlife.org/species/search or

- IUCN Red List - Wikipedia or

- Species | BFN

(last visit of the sites: 12. March 2023)