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 INTERNET [log in to unmask]