> Here in Australia I have heard anecdotal stories of bees becoming confused
> when placed under high voltage power lines.  There are stories of a drop
> off in numbers in the hives.  The theory is that as bees often use the
> earth's magnetic field to navigate, then the magnetic fields produced by
> the power lines causes the confusion.
 
I recall some very strange research that exposed colonies to *very
high* electromagnetic fields.  At the top end, the colonies showed
very erratic behaviour - they propolised all of the entrances shut
and 'committed suicide' (No, no, I didn't say that!  No
anthropomorphism from here!  Don't start on me!).
 
 
  (\      Nick Wallingford
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