Chris:

> My presumption has always been that they tell the bee, when in the great
> outdoors, which way is up.  This may be why they come a cropper when they
> fly out in snowy weather and the ground is much brighter than expected so
> they try to fly upside down.
>

If the dance language theory has truth to it, then bees are able to tell
which way is up in darkness.  And supposedly very accurately too since they
are measuring an angle from "up".

I think ocelli are for something different, and photoperiod is an obvious
choice.

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