Winter Bird Walk will be held at the Thorn Preserve in Woodstock. Members of the Woodstock Land Conservancy and Mark DeDea of the John Burroughs Natural History Society will lead the walk. The preserve, at 55 John Joy Road, is a 60-acre parcel that attracts wintering raptors. The preserve is bordered by the Sawkill Creek, which often holds waterfowl late into the winter, and a wooded swamp sprinkled with winterberry that should attract Hermit Thrush. Participants should bring binoculars if they have them. Off-road parking is available on the lawn area to the left of the driveway. Participants should not park on the road.