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Threatened and Endangered Species

Snowy Egret (State Endangered)
photo: U.S Fish & Wildlife Service - Gary Stolz

According to the Illinois Department of Natural Resources, a species will be listed as threatened or endangered when it meets one or more of the following criteria:

  1. Species included in the Federal list of Endangered or Threatened Species
  2. Species proposed for Federal Endangered or Threatened Species which occur in Illinois
  3. Species which formerly were widespread in Illinois but have been nearly extirpated from the State due to habitat destruction, collecting, or other pressures resulting from the development of Illinois
  4. Species which exhibit very restricted geographic ranges of which Illinois is part
  5. Species which exhibit restricted habitats or low populations in Illinois
  6. Species that are significant disjuncts in Illinois (i.e., the Illinois population is far removed from the rest of the species' range).

Visit the Illinois Department of Natural Resources website for a complete list of federal and state threatened and endangered species (www.dnr.state.il.us/espb). To find a list of threatened and endangered species by county visit: www.fws.gov/midwest/endangered/lists/illinois-cty.html.


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