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The Boston Globe

Metro

Island getaways lure creatures great, small

Data indicate more and more animals are making their way across Harbor

It’s not just day-trippers who are flocking to Boston’s scenic Harbor Islands. Furry four-legged creatures are also swimming or scurrying their way onto the island shores, creating an unexpected population boom.

An ongoing survey of mammals on a half-dozen of the close-in islands has found thriving populations of coyotes, foxes, and deer. Researchers also have seen “aberrantly large” varieties of usually tiny animals — white-footed mice on Peddocks Island, for example — that weigh twice as much as their mainland cousins.

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