COUNTY

Mars Public Library, 107 Grand Ave., will host an educational bird presentation at noon Jan. 19. Admission is free. Register by calling 724-625-9048.

Jennings Environmental Education Center, Route 528, Brady Township, will host a prairie improvement day from 9 a.m. to 1 p.m. Jan. 19. The event is free but registration is required by Monday. Volunteers will help the Jennings staff manage the prairie ecosystem. Lunch will be provided, and each participant will receive a commemorative soup mug. Participants must be 12 or older and should dress for the weather, including gloves and waterproof boots. Register by calling the center at 724-794-6011.

Moraine State Park will host volunteer work days from 10 a.m. to noon Jan 18 and 19 from the South Shore park office. Volunteers will help clear brush and fallen branches from the Pleasant Valley and Sunken Garden trails so they are open for hikers and can be groomed for cross-country skiing. Rain or shine, dress for the weather, and take work gloves, snacks and water. No reservations are needed, but call the park office at 724-368-8811 about groups participating.