DuPage Plants and Wildlife

For many visitors, the Forest Preserve District’s most familiar and popular natural resources are the diverse plants and animals that live in the county’s forest preserves.

For lists of species recorded in DuPage forest preserves, download either Plants or Wildlife. If you’re interested in ways to address common issues with DuPage wildlife in and around your home, visit Willowbrook Wildlife Center's Living With Wildlife.To read about District efforts to monitor and maintain specific native plant and animal species, select one of the topics below. 

Links to Helpful Resources 

Amphibians and Reptiles

Although amphibians and reptiles are cold-blooded vertebrates that look similar on the surface, there are some specific differences that set them apart.


From those that frequent the rarest ecosystems to those that congregate in local backyards, DuPage County’s resident and migrant birds are truly fascinating members of the forest preserves’ fauna.


Forest Preserve lakes and rivers offer great fishing year-round, and the Forest Preserve District uses several methods to ensure that the aquatic ecosystems that support these popular species remain healthy.

Insects, Arachnids and Crustaceans

Insects, arachnids and crustaceans are members of the largest category of creatures on the planet: arthropods.

Invasive Species

Invasive species, also called nuisance species, are plants and animals that are “nonnative.”


Mammals are perhaps the area’s most recognizable wildlife. With over 40 species, from the least shrew, which weighs as much as a deck of cards, to the white-tailed deer, they are an irreplaceable part of the overall diversity of DuPage County’s forest preserves.


Next to arthropods (insects, arachnids, crustaceans, etc.) mollusks are the largest group of animals in the world.

Native Plants

Adapted to the environment, native plants can attract and sustain wildlife.

Centennial Bio Blitz Discoveries

Here's what we learned from our Centennial Bio Blitz on June 26-27, 2015.
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