I've heard of people providing containers with sand, rocks and water for butterflies...especially for those butterflies prone to do what they call "pudding". Just hadn't heard about doing it for the bees. If the bees have enough nectar plants available, would they still need such a feeder? With hummingbird feeders, I've mainly had problems with wasps visiting it...not bees, usually. In cool or cold weather, I've seen bees going into soda cans (those I collect a while before turning them in). Soda-flavored honey...I wonder if they have that.
