Crows do not have the best of reputations, but new research has shown they are among the most intelligent animals in the world, able to use tools and recognize each other's voices and 250 distinct calls. "A Murder of Crows" premieres Sunday, October 24, 2010 (check local listings).Premiere Date: October 23, 2010 | Runtime: 00:00:30
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NATURE brings the beauty and wonder of the natural world into your home, becoming in the process the benchmark of natural history programs.