Description:  Thompson Circle (the "turnaround") marks the beginning of Dead Pond Trail extending along Long Ridge (the eastern shoreline in 1862) into the Ecological Reservation. The ridge is a good spot to watch for migrant raptors in spring. Connecting trails to Niagara Pond may be taken to search for Sora, Virginia Rail, and bitterns (in the large cattail marshes there) as well as a variety of other wading birds and waterfowl. The thicket lying between the marsh and Long Ridge attracts other migrants and nesting birds.