I Can't count how many times I've had to rescue a bee or bee like creature struggling after falling into the birdbath. I am out there multiple times daily fishing out bees, drying and warming them and then releasing them to return to their hives.
So i set up a water feeder by filling a pie pan with Clear Beads and then water. The Beads give the bees a spot to land so that they don't drown when they come to drink, and the bees love it. No more drowned Bees.