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Beach vole
The beach vole (''Microtus breweri'') is a species of rodent in the family Cricetidae. It is found only in the United States, and its natural habitat is temperate grassland.
Muskeget Island, between Nantucket, Massachusetts and Marthas Vineyard is the only known home of the beach vole, also known as the Muskeget vole. There is a question whether the Muskeget vole is a unique species or a subspecies of the meadow vole (''M. pennsylvanicus''). This vole may soon be listed as an endangered species.
==Distribution==
''M. breweri'' can only be found on Muskeget Island, off the west coast of Nantucket, Massachusetts, United States.
However, throughout the history of Muskeget Island, it might also have appeared on nearby South Point and Adams Islands, which are considered as a part of Muskeget Island in a rather broad point of view. Moreover, the island has moved about 1,000 feet eastwardly over the last about 200 years, along with its changing process of shape, size and position due erosion and tidal buildup.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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