I had an observation hive with a similar problem. If you make a tube out of
metal window screen or hardware cloth (mesh small enough to stop the bees, 3mm
or 8 mesh/inch), 6 inches long or more, to form the passageway for the bees from
the observation hive to the window, at least the air flow at the hive entrance
is dissipated and in my case the bees did OK.
 
good luck
Kerry Clark, Apiculture Specialist
B.C. Ministry of Agriculture
1201 103 Ave
Dawson Creek B.C.
        V1G 4J2  CANADA          Tel (604) 784-2225     fax (604) 784-2299
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