I installed an observation hive late last summer in our university biology department building. The hive consists of three deep frames. The air it the building is extremely dry during the heating season, so I reasoned that the bees might need water. They have been taking about 20 ml per day from an inverted bottle inserted in one of the top vent holes which are covered with wire screening. I feel that the excellent condition of this colony is partly due to the water supplied to them. Now I am wondering how an overwintering colony of honey bees keeps from dehydrating in nature. Do they recycle condensed water from the combs surrounding the cluster? Anyone have any thoughts? Bill Morrison Dept of Biology Shippensburg Univ Shippensburg, Pennsylvania USA (Southcentral Pennsylvania)