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Indiana Department of Natural Resources

Nature Preserves > Heritage Data Center > Endangered Plant and Wildlife Species Endangered Plant and Wildlife Species

These are plant or animal species existing in such small numbers that are in danger of becoming extinct, especially when a species is placed in jeopardy as a result of human activity. A principal factor in the endangerment or extinction of a species is the destruction or pollution of its native habitat. Other factors include overhunting, intentional extermination and the accidental or intentional introduction of alien or invasive species that outcompete the native species for environmental resources.


  • Less than five occurrences in the state
  • Species at the brink of extinction now throughout all or a significant portion of its range


  • Six to 20 occurrences in the state
  • Species are likely to be at the brink in the near future
  • Any species likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range


  • 21 to 100 occurrences in the state
  • Rare or uncommon, but not immediately threatened

Hooded Warbler

Hooded Warbler
Karner Blue Butterfly

Karner Blue Butterfly

The Indiana Natural Heritage Data Center