Succop Nature Park, 185 W. Airport Road, Penn Township, hosts free birding and nature hikes with a naturalist at 9 a.m. Thursdays. Trails are open dawn to dusk. Call 412-963-6100 or visit www.aswp.org.

Jennings Environmental Education Center, Route 528, Brady Township, will have a First Day Hike from 1 to 3 p.m. Friday; a Winter Trails Day Snowshoe Clinic from 10 a.m. to 1 p.m. Jan. 9 with registration required by Jan. 6; and a Prairie Improvement Day from 9 a.m. to 1 p.m. Jan. 16 with registration required by Jan. 8. Call 724-794-6011.

Moraine State Park, Muddy Creek Township, will be the site of a First Day Hike from 1 to 3:30 p.m. Friday starting from the bike rental parking lot, North Shore; a cross country ski workshop from 1 to 3 p.m. Jan. 9 at the Pleasant Valley day use area, South Shore (registration required); and a Winterfest 5K run/walk on Jan. 16 with 9 a.m. registration at Pavilion 7, McDanel’s Launch, North Shore. Call 724-368-8811.