Bee Bumble
House Bee
I have put these in the entrance to some of my hives in the summer:
bee-equipment.co.uk
In the hope that they provide water to the bees - the level of water goes down, but is it being consumed by the bees or just evaporating?
Does anyone who uses these drinkers have a camera in their hives which shows the bees drinking from them please?

Entrance Feeder
Fits in the front of your hive and its easy to use. Fill up with your sugar syrup mix and place lip of feeder inside the hive. Holds 500ml liquid Approximate dimensions- 84mm wide, 7mm deep at feeding end, 134mm deep to top of liquid container.

In the hope that they provide water to the bees - the level of water goes down, but is it being consumed by the bees or just evaporating?
Does anyone who uses these drinkers have a camera in their hives which shows the bees drinking from them please?