Bartramian Audubon Society will participate in the second annual Oil Region Birding Festival, which will include bird walks, workshops, tours, a picnic, an owl prowl and a dinner, from Friday through Sunday. Call 800-483-6264, Ext. 110, or visit the Web site, www.oilregion.org.Call 814-437-5858.

<B>McKeever Environmental Learning Center</B>, Sandy Lake, will be the site of "Exploring the Night Sky" outdoors at 9 p.m. Friday and Saturday. Phillip Tramdack, director of library services at Slippery Rock University, will give the program. Participants will be able to use a telescope. Admission is free. Call 724-376-1000.