Nordic walking

William O'Brien State Park

1-2:30 p.m. Saturday

Join a certified Nordic walking instructor for an aerobic walk and learn about the Big Woods ecosystem, including some of the plants and animals. Nordic walking is an aerobic activity. The form distributes the walker's weight more so knees aren't doing all of the work. Demonstration poles, which are different from trekking and hiking poles, will be provided. This program is geared to people who can walk 45-60 minutes, including small hills, with confidence. Wear comfortable shoes with good tread and bring water. Registration required; call 651-433-0500. (

Geocaching 101

Fort Snelling State Park

1-3 p.m. Saturday

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

'Roving naturalist'

Nerstrand Big Woods State Park

10 a.m.-4 p.m. Saturday and Sunday

Roving naturalists will be stationed along Hidden Falls Trail through May 15 to assist with wildflower identification, pollinator observations and other signs of spring. (507-333-4840,

Family archery

Cleary Lake Regional Park

9-11 a.m. Saturday

Learn the basics of shooting safely and accurately with skilled instructors. Shoot at stationary targets and compete in fun shooting games. Equipment provided. Cost is $10. This program is for ages 8 and older; children 17 years and younger must be accompanied by a registered adult. Call 763-694-7777 and reference activity number 244545-01. (

May Day hike

Eastman Nature Center

1-3 p.m. Sunday

Search for spring flowers, migrating birds and calling frogs. Cost is $5. Reserve a spot. Call 763-694-7700.

Morels and flowers

Whitewater State Park

1-3 p.m. Wednesday

Morels should be popping up along with spring wildflowers. Look for both on an easy hike. Given a good harvest, we'll sauté and sample the mushrooms we find. Registration required. E-mail or call 507-932-3007, ext. 226. A wildflower checklist is available at the visitor center. (507-932-3007,

Bird hike

Silverwood Park

6-7:30 p.m. Wednesday

Head to St Anthony, look for birds and learn tips for finding them. Cost is $5; reservations required. (763-559-6700,