Bought the donor for my 3 Wellis for outdoor aviary, as drinking and even as a bowl. 'm Very happy, first I do not have every day my Wellis disrupt drinking or eating to refill and empty shells automatically fall on the floor / in the water bowl water remains super clean and fresh, which is very important for budgies (as well as for Traderjob all other animals: P) Delivery is super flux. Very satisfied.