Shorebird Flyways of the World. Shorebirds and waterfowl often migrate along established flyways. Map courtesy of International Wader Study Group. Hundreds of millions of birds make long-distance migrations each year, often crossing continents and even oceans along their way. So it’s only natural that they take similar routes. These routes are called flyways—a term for any well-established route used by large numbers and multiple species of migr…
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