Get a behind-the-scenes look at the DuPage Forest Preserve District’s efforts to raise freshwater mussels and federally endangered Hine’s emerald dragonflies. Then, meet some of the crayfish, insects, and fish that call the county’s waterways home. Tours begin every 30 minutes. All ages; under 18 with an adult. $5 per person. Register online or at 630-933-7248.

BLACKWELL FOREST PRESERVE