Nightly News   |  May 16, 2012

Bringing back the swallows

Thirty years ago, the Cliff Swallows stopped migrating to the Mission at San Juan Capistrano, Calif., after it underwent renovations. But now biologists are trying to lure the swallows home by playing the birds’ courtship song just beneath the mission’s bell tower. NBC’s Miguel Almaguer reports.

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