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7 cultured animals that share knowledge

By: Bryan Nelson on May 9, 2011, 11:08 a.m.

Photo: ingridtaylar/Flickr

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Songbirds such as starlings, cowbirds and sparrows aren't born knowing how to sing their particular songs. Rather, they imitate them from others. This has led to amazing song diversity among different groups of birds, so much diversity that many researchers now acknowledge that songbirds are on par with cetaceans in their ability to generate unique dialects.