Difficult to Clean and Freezes in Winter

The idea is good, but the overall is just okay. The birds like to drink from the cup and it does automatically refill which is nice, but when the sand or debris gets in it, it isn't able to be detached and cleaned which makes it difficult to keep clean. In the winter, the water in my bucket stays above freezing, but the small tube freezes up and the mechanism inside does too so it doesn't work in the winter until you bring it inside at night. I'm looking for a different solution.

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