On 9/04/2015 11:33 AM, Charles Linder wrote:



>
> I am betting there are trace elements in those things that the bees look
> for,  just like elephants in salt mines.  Instead of assumiung they are dumb
> and easily fooled,  maybe they are smarter than we think....?

Maybe, but they do seem unable to evaluate pollen quality, unlike 
nectar.  Ragweed, or at least what we call ragweed, is such a poor 
quality that they are better off not gathering it.  Even worse than maize.

Geoff Manning

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