The more Heinrich observed their habits, the more odd the bird's behavior became.
There was no biological imperative, it seemed, to their communal spirit. From an evolutionary perspective, the raven's willingness to share food challenged conventional wisdom. Available in used condition with free US shipping on orders over 10. Ravens in Winter: Heinrich, Bernd: 9781476794563: : Books Books Science & Math Biological Sciences and start saving today with Buy new: 15.39 List Price: 19.99 Details Save: 4.60 (23) Get Fast, Free Shipping with Amazon Prime FREE Returns FREE delivery Monday, May 1 on orders shipped by Amazon over 25. And it was during these trips to Maine, the site of much of his research, where he first noticed this "unusual" behavior of ravens. These are some of the riddles that noted sociobiologist Bernd Heinrich. Why do ravens, generally understood to be solitary creatures, share food between each other during winter? This was the question Bernd Heinrich asked himself as he was observing another one of his prime research subjects, the highly social bumblebee. Why should ravens-which are usually solitary birds-share valuable food in the. Wilson to call it "one of the most interesting discoveries I've seen in animal sociobiology in years," Ravens In Winter is a scientist's impassioned study to understand the mysterious social habits of one of nature's most formidable birds, the raven.
Summary: A fascinating and important work of ornithology, which led E.O.
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