Birding, tree-tapping and other events at Minnesota parks

1 Birding trek

Minnesota Valley National Wildlife Refuge, 8-10:30 a.m. Saturday

Join a bird walk on one of the many refuge units during spring migration. Old Cedar Avenue is a great place to look for migratory ducks, geese, swans, and raptors. Birders of all skill levels are welcome on this walk. Bring along your binoculars, favorite field guide and dress appropriately for the weather. Led by Craig Mandel, volunteer refuge naturalist. More information: 952-854-5900

2 Maple syrup

Hyland Lake Park Reserve, 2-3:30 p.m. Saturday

Discover one of Minnesota's oldest traditions: making maple syrup. Learn what is needed, why it works, and see the process in action. Tap a tree in the sugar bush, collect sap, and bring it to the evaporator. Try maple syrup and sugar. The cost is $5. There is a 20-percent discount for groups of four or more. This program is for all ages. Children 17 years and younger must be accompanied by a registered adult.

3 Bluebirds

Learn how to attract eastern bluebirds to your back yard and how to establish your own bluebird trail. Bluebird nest box construction plans will be available. Call the park in advance to reserve a nest box kit for $18. Bring your own hammer to the program. Members of the Friends of William O'Brien State Park group will help assemble boxes. More information: 651-433-0500 or www.mndnr.gov/ptcalendar.

4 Maple syrup II

Wild River State Park, 1-2 p.m. Sunday

Meet at the visitor center to venture into the park's sugar bush where you'll learn how to tap a tree and collect sap that's used to make maple syrup. You will need a vehicle to travel to the area where the group will tap trees. Note: Syrup will not be processed at this program. More information: 651-583-2125, ext. 227 or www.mndnr.gov/ptcalendar.

5 Raptors