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Knots knowledge

Afton State Park

9:30-11 a.m. Saturday

A program on basic knot-tying for women. Registration required. Call 651-231-6968 or e-mail linda.radimecky@state.mn.us. (mndnr.gov)

Geocaching

Fort Snelling State Park

10 a.m.-noon Saturday

Explore the history of the park with a scavenger hunt-style geocaching course. It will be fun and educational. Equipment and instruction are provided. To register, call 612-725-2724 or e-mail krista.jensen@state.mn.us. Meet at the visitor center. (612-725-2724, mndnr.gov)

Cleanup day

Lake Maria State Park

1-4 p.m. Saturday

Join park staff, the Friends of Lake Maria and other volunteers to get some fall chores completed. Bring work gloves and sturdy footwear. To sign-up, call 763-878-2325. Meet at the trail center at 1 p.m. (mndnr.gov)

Bird-watching trek

Minnesota Valley National Wildlife Refuge

8-10:30 a.m. Saturday

Walk from the Bass Ponds trailhead and hear about the refuge’s role in the fall migration, who visits and why. Birders of all skill levels are welcome. Bring along your binoculars and a favorite field guide (952-854-5900, bit.ly/mnfwr)

Becoming an Outdoors Woman

Upper Mississippi Wildlife Refuge, Winona

9 a.m.-3 p.m. Saturday

Watch the tundra swan migration. Cost: $25. (1-507-454-7351, mndnr.gov)

Learn skijoring

Fish Lake Regional Park

9 a.m.-noon Saturday

Stay active this winter by cross-country skiing with your dog. Learn about equipment, commands, training techniques and etiquette. Go on a guided, on-foot session with your dog. Equipment provided for class. Cost is $5. To reserve a spot, call763-559-6700. Note: Dogs must be friendly around others and stay in their owner’s car the first 45 minutes. (threeriversparks.org)

Digging into history

Whitewater State Park

6-7 p.m. Saturday

Did you know that Whitewater State Park was once home to German prisoners of war? (1-507-312-2300, mndnr.gov)

Birds on the move

Eastman Nature Center

1-3 p.m. Sunday

Explore bird artifacts, listen to calls, and play a migration game. Drop in anytime. (763-694-7700, threeriversparks.com)

Walk with a naturalist

Silverwood Park

1:30-2:30 p.m. Sunday

Take a walk, and watch and listen for seasonal birds. Bring binoculars if you have them. (763-694-7707)