live in north area that is very cold, I have to add water every day as heat evaporates water in bird bath, I also wire a dead branch over the top and side as birds love to land on it both before and after drinking, they also lean over from branch and drink. Interesting point, mine is on fairly tall post outside my living room window, so I can open window and add water from inside on cold mornings. Also I need to raise my birdbath as deer will come and drink it dry quickly. DNR does not recommend putting out water for deer as many have diseases that would be transferred to other wildlife if they drink in this and their saliva could contaminate water. love your articles, I thoroughly clean and sterilize my bird bath occasionly and have no mosquito problems. Birds often bath in below zero weather.
Sounds like you have a nice and convenient set-up! I don't have a bath, but a pond with a deicer. A funny thing I saw the other day was a house finch bathing while sitting on a branch that had fallen in the pond. I guess they don't need much of a surface to stand on at all!!