Join a periodic survey of waterbirds on a freshwater, tidal, marsh at Jug Bay Wetlands Sanctuary. The ornithological knowledge and collaborative attitude of our volunteer team creates a phenomenal learning experience. All of this in the beautiful early morning light of the Jug Bay wetlands, on the Patuxent River. Ages: 12 and older. Free (entrance fee waived). Registration required: 410-222-8006 or e-mail email@example.com.