Heinrich and Bugnyar have an interesting article in the April 2007 Scientific American titled "Just How Smart Are Ravens?" It reminds me of this video that I have used in my teaching, made by Weir et al., of a Raven who obviously understands a few things about physical forces and causal relations. It takes a straight wire and fashions a hook to lift from a tube a container that contains a piece of meat.
Monday, May 07, 2007
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