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University Library, University of Illinois at Urbana-Champaign

Endangered and Threatened Species in Illinois, the U.S., and Worldwide: Definitions

How to find information about endangered & threatened species in Illinois


visualization of IUCN Categories

Diagram showing relative positions of IUCN conservation status categories (uploaded to Wikimedia Commons by user Pengo and used under CC 2.5).  EX=Extinct, EW=Extinct in the wild, CR=Critically endangered, EN=Endangered, VU=Vulnerable, NT=Near threatened, LC=Least concern.