Screech Owl Walk – On Saturday, September 21st from 7:30pm – 8:45pm, join Friends of Princeton Open Space (FOPOS) and South Jersey Wildlife Tours for a guided Eastern Screech Owl walk at the Billy Johnson Mountain Lakes Nature Preserve in Princeton. Listen and look for Eastern Screech Owls, and learn about them along the way. Limited to 20 participants, advance registration required, not recommended for young children, Screech Owl sightings not guaranteed. Cost is $15 per adult, children under 10 free. Register at fopos.org/events-programs.