PennLive.com: A project of the Cornell Lab of Ornithology and Colorado State University, BirdCast applies weather surveillance radar to gather information on the numbers, flight directions, speeds and altitudes of birds aloft.
linkPennLive.com: A project of the Cornell Lab of Ornithology and Colorado State University, BirdCast applies weather surveillance radar to gather information on the numbers, flight directions, speeds and altitudes of birds aloft.
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