Do This Now: Weekend events from birding to easy hikes

Noon-4 p.m. Friday

Stop by the visitor center for ongoing scavenger hunts, crafts and self-guided activities. (651-465-5711; mndnr.gov.

1-2:30 p.m. Friday

A naturalist will open a big bag of bones, and a game of crime scene investigation will commence. Determine where the bones originated and how they got there. You will also help solve the mystery of what owls have been eating as you scientifically analyze their pellets. (651-583-2125, ext. 227, mndnr.gov)

9-10:30 a.m. Saturday

Whether you are just starting or have acquired a long list of species on bird-watching expeditions, share in this fun, recreational opportunity. (651-436-5391, mndnr.gov)

1-3 p.m. Saturday

10 a.m.-noon Saturday

Discover the fun of geocaching and how you can use a global positioning system (GPS) unit to find hidden treasures at Minnesota state parks and trails. Bring your own GPS unit or use a park-issued unit. Registration required; call 612-725-2724 to register. (mndnr.gov)

Noon-1 p.m. Sunday

Join the naturalist and explore the glacial pothole area for unique geologic formations. Also, get great, fall scenic overlooks. Meet at the visitor center. (651-465-5711, mndnr.gov)

Jay Cooke birthday

The park's 100th birthday celebration continues with another event. Discover what has happened in the park over the past century during this presentation of historic photos and more. Refreshments will be served. Meet at the River Inn Interpretive Center. (1-218-384-4610, ext. 227; mndnr.gov)

1-3 p.m. Sunday