Berlin Pond (Audubon IBA) webpage
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About Berlin Pond Important Bird Area
Berlin Pond, located just west of Berlin is one of the last undeveloped waterbodies in the State of Vermont due to its primary function as a municipal water supply for Montpelier and Berlin. The pond is approximately 270 acres. Emergent marsh and shrub swamp can be found adjacent to the pond. Associated with the pond are equally undeveloped uplands of characteristic northern hardwood forest which grade into wetter forests of cedar, red maple and black ash. Vermont Natural Community Types include Northern Hardwood Forest, Northern White Cedar and Sweet Gale Shoreline swamp and Shallow Emergent and Cattail marsh.
Due to its size and the relatively undeveloped nature of the pond and associated uplands, Berlin Pond is home to a host of priority species including the state endangered Common Loon. The diverse wetlands contain Pied-billed Grebe (S2), Sora (S2), American Bittern (S3) and Virginia Rail. Uplands support the suite of species typically associated with northern hardwood forest including Ovenbird, Black-throated Green and Blue warblers, and all but the high elevation thrushes. Other species commonly seen are the state endangered Osprey and Bald Eagle and the state threatened Black Tern.
The undisturbed nature of Berlin Pond makes it unique in the state. Local conservation committees have worked hard to protect the pond and its watershed. The biggest threat is the development of a new water plant that may diminish the need to keep Berlin Pond in its pristine state. As a result of the new plant, restrictions may be lifted allowing greater recreational use of the site. This increased use would result in higher disturbance rates and could potentially spread invasive plants such as Eurasian Milfoil throughout the pond.
From Berlin Pond (Audubon IBA) webpage