I can't say enough about having large terracotta pot saucers (the ones you put under potted plants to catch any water that leaks, but just the saucer not the pot). Unglazed terracotta soaks up water and as it evaporates it keeps the water relatively cool here where we have single digit humidity and super high summer temps. I use them for my chickens and quail. The quail roll around in the water like dogs so I have to fill them a couple of times a day when it gets hot. They also will lay in them and if they've had a dust bath they just get muddy but hey, it's cool mud! The chickens stand in them to stay cool, they don't get as crazy as the quail. Two details on using these. First they must be located where they will be in shade or the evaporation will not be able to keep them cool. Second be prepared to clean them! These birds will get them very dirty! They need to be cleaned daily or twice daily but it's worth it to keep them cool. I've tried using different pans and saucers made of glazed ceramic, plastic, glass, and metal but nothing beats unglazed terracotta for coolness.The saucers of water always have a crowd on hot day