Caring for your Bird Bath in Winter
Should the bird bath be left outside during particularly frosty spells, any water left in the bowl may expand as it freezes, and cause the bird bath bowl to crack. To avoid this, ensure that the bird bath is regularly emptied during colder spells, as to not damage the bowl.
When emptying the bowl of the bird bath, it's also a good idea to give it a quick clean to reduce any algae build up. If algae build up is left, it can be much harder to remove over time and may even stain. Clean this out during the winter to avoid a green bird bath in the Summer!
If emptying the bird bath often isn't for you - try leaving a tennis ball floating in the water! The movement of the ball in the wind will help disrupt any ice crystals forming and lessen the chance of the water freezing over.