``One of the most interesting discoveries I\'ve seen in animal sociobiology in years.`` -- E.
O.
What started as mere curiosity turned into an impassioned res.
The more Bernd Heinrich observed their habits, the more odd the bird\'s behavior became.
Wilson Why do ravens, generally understood to be solitary creatures, share food between each other during winter? On the surface, there didn\'t appear to be any biological or evolutionary imperative behind the raven\'s willingness to share. ``One of the most interesting discoveries I\'ve seen in animal sociobiology in years.`` -- E.
O