What bees may think is unfathomable.  What is striking is how much more
quickly they learn than my ponies, which, considering relative longevity, is
probably very necessary.  In early Spring I often remove entrance reducers
each morning and replace them each evening.  Those bees having exited the
smaller hole land and waddle in as if the reducer were still in place.
Those bees having exited the unreduced entrance fly directly in, landing
beneath the slat board.  Either bees are stupid because they don't
immediately exploit the unreduced entrance, or they are smart to learn to
expoit it in one trip.  Also, one robbing opportunity suffices quickly to
induce robbing.  Your choice, stupid or smart.

Bill Morong