Join a Naturalist for a night-time stroll at Detweiler Park. Discover WHO may be calling in the night and the eight different species of owls found in Pennsylvania. A 1.5-mile walk on various terrain will lead us through spruce trees and along field and forest edges. This prowl will focus on using our sense of hearing while listening for responses to owl calls. Dress for the weather and wear proper footwear. Meet at the trailhead kiosk. Space is limited. Pre-registration required.