My het for Pied female flips her waterbowl upside down and sleeps with her head on top of the waterbowl. It's like she's using the waterbowl for a pillow.

I've stopped trying to keep water in her bowl. I give her fresh water 3 days a week and then only for a few hours. She drinks, then I remove the water and put it back in her tub, upside down for her.

They are some interesting animals!
Jim Smith