Jennings Environmental Education Center will host a 90 minute wildflower walk at 2 p.m. Sunday. A two-day fly fishing clinic is planned for 10 a.m. to 3 p.m. May 16 at Jennings and May 17 at an off-site stream for those age 10 and older. The fee is $15 and registration is required. Call 724-794-6011 to confirm programs.

Moraine State Park will be the site of historic oil well demonstrations from 10 a.m. to 4 p.m. Saturday. The central powerhouse site is beyond the forestry and regional office building on Park Road, Old Route 422, off Route 528. "Bike and Learn" will take place at 1 p.m. Saturday. Join park staff at the bike rental station on the North Shore of the park for a guided bike ride. Participants should take their own bicycle or contact the concessionaire at 724-368-9011 for rental information. "Endangered Species: What Can I Do?" is set for 2 p.m. Sunday. Meet the park naturalist and volunteer Paul Wallenberger at McDanel's Launch Pavilion No. 7, on the North Shore. Call 724-368-8811.

<B>McConnells Mill State Park</B>, Slippery Rock Township, Lawrence County, will host a wildflower walk at 2 p.m. Sunday. Meet at the courtyard of the Old Mill. The mill doesn't open until May 23. Call 724-368-9320.