Our reservations provide critical habitat for 89 rare species (21 vertebrates, 29 invertebrates, 39 plants) and protect 12% (60 pairs) of the federally threatened piping plover population in Massachusetts. Twelve of our properties are state-listed as Areas of Critical Ecological Concern. Through several rare species protection programs, many in concert with local and regional conservation groups, The Trustees work to preserve the state’s rich biodiversity. These programs include: