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Wildlife

Illinois is home to a wide range of animal species, many of which have been impacted by human activity ranging from urban sprawl to agriculture. Now, animals face the additional threat of climate change. Warmer temperatures in summer increase plant and animal pathogens causing disease and death. New invasive species, able to survive in warmer climates, outcompete native ones. Droughts reduce available drinking water and increase wildfires, which pose a mortal threat to a variety of animals.

Research by the Illinois Natural History Survey suggests “that a continuing decline in the populations of many native plants and wildlife species is likely attributable to climate change” (14). 

What has IDNR Been Doing?

The Illinois Department of Natural Resources has long been studying the effects of climate change on our animal population. To help animal populations, IDNR invests in natural areas to protect and restore native habitats. The Illinois Wildlife Action Plan (IWAP) works to report on the conservation status of the state's wildlife and their habitats, identify the present issues, and outline strategies and actions to conserve species of concern.

  • The IWAP is scheduled for a comprehensive review and revision (expected by October 1, 2025) which is expected to incorporate climate mitigation and resilience.  The Climate Action Team will work closely with the IWAP group to identify areas of overlap and to highlight priorities for research and implementation.
  • The current IWAP plan also includes the Green Cities Campaign to improve community planning efforts by incorporating open spaces and wildlife needs into resource planning documents. 
  • IDNR Endangered Species Program
  • IL Endangered Species Protection Board

Learn More

Division of Natural Heritage
Learn more here about IDNR’s Division of Natural Heritage, which works to protect, maintain, and recover natural areas, endangered and threatened species, and other vulnerable plants and animals that represent Illinois' natural heritage.

Species Conservation
This site provides information on how IDNR’s Division of Natural Heritage works to conserve Illinois species, which is more important than ever as human influence, both direct and indirect, continues to make lasting impacts on wildlife and their behaviors.

Wild About Illinois Species
This IDNR Division of Education resource provides images and information about the many species that make Illinois their home.