I purchased a 16oz. Lixit water bottle for our Umbrella, Cockatoo, "Cooper" a couple of weeks ago. My question, why did I wait so long? It only took a few minutes for him to figure out what to do with that strange thing hanging from his cage. Now I am sure that he is getting fresh, clean water. (He dunks everything in his water bowl.) I still put a little water in his dish so he can still play in it.