After using pan type waterers for many yrs. I recently switched to a 5gal. sparkle pail type waterer that is suspended from the ceiling . It has 4 nipple type valves coming out the bottom from which the chickens can get water. It has been two weeks and I can't tell if they have adapted to the new waterer. Also not sure of the height above floor it should be for chickens to access it. Are they able to make the switch on their own ?