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Jennings Environmental Education Center, Route 528, Brady Township, will present “Nature Detectives: The Scoop on Poop” from 2 to 4 p.m. Dec. 4; registration is required by Dec. 1. Call 724-794-6011 or visit www.events.dcnr.pa.gov to register.

Moraine State Park, Muddy Creek Township, will be the site of “Backyard Birds” for preschool-aged children from 10:30 to 11:30 a.m. Dec. 1 at Pavilion 7 at McDanel’s Launch on the North Shore. Call 724-368-8811.