The IUCN Red List of Threatened Species™ is a list of endangered species maintained by the International Union for Conservation of Nature (IUCN). Some also refers to it just by “The Red List”. It is the world’s most comprehensive list of species threatened by extinction.
The species listed on The IUCN Red List of Threatened Species™ are categorised as:
All species in this encyclopedia will display the current status using a graphics in the upper right corner, example:
The Yellow-crested Cockatoo (Cacatua sulphurea) is one of the species that are critically endangered according to The IUCN Red List of Threatened Species™