Animals leave all kinds of evidence of who they are and what they have been doing. Join Scott Ruhren, senior director of conservation, for an exploration of the Lathrop Wildlife Refuge. We will try to identify tracks, scrapes and more. Part of the walk will be on the edge of a marsh and salt pond and there could still be some snow. Lathrop Wildlife Refuge, Route 1A, Westerly, RI; Fee: $10/member adult, $5/member child; $14/non-member adult, $7/non-member child. Ages: 8+. Register online through the events calendar at www.asri.org.