Remember, when you leave out water, or any liquid for bees, which is a very good thing, always leave stones or a stick leading above the water in the container, so that bees that come in for a drink can crawl their way out and fly away. I found many dead bees before I did that. It made me sad, and gave me less fruit. I think that in nature without humans, the reservoirs of water are very tiny, like an up turned leaf. They can crawl out of that pretty easily, but not a 5 gallon bucket with vertical sides. Sometimes nature works great, until we screw it up.
JohN S
PDX OR