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How falcons protect vineyards

Starlings, an invasive species that first appeared in Northern California in the 1930s, have been a headache for the area's vineyards. At first, Rams Gate Winery in Sonoma tried traditional methods to ward off pests; none of them worked well. So they brought in reinforcements: falcons, which have been put to work also at airports and golf courses that have bird pest problems. John Blackstone reports on what happens when nature is used against nature.
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