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DE
Earth Matters: When, or if, the swallows return: Massachusetts’ iconic cliff swallows in decline
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Amherst Bulletin
It refers to a colony of cliff swallows located at Mission San Juan Capistrano in Southern California.
Massachusetts is home to cliff swallow colonies as well.
Modern building materials are far from the only contributor to the cliff swallows’ decline.
House sparrows, introduced to North America from Europe, steal the swallows’ nests, sometimes even killing their nestlings.
The Massachusetts Breeding Bird Atlas illustrates cliff swallow’s frightening decline in our state.
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