I notice since I took the cardboard out of the pen the chick is now spending more time under the warmer so I think the cardboard could have been part of the problem. I'm so relieved the chick is doing well. I removed the cardboard and changed to plain water. I'm so relieved that my chicky is still alive and doing well. She likes to be held but I think that's because she's lonely. If she's still doing well in a few more days I might get a couple more chicks so she has some friends.