i got this to hang inside a cage for my rooster. he has a huge comb and gets frostbite so easily, so the vet said keep him in a warm area when its below 32 degrees out. originally that warm place was in the house but finally i got a spot for him in the coop. this hangs in the cage, and is really great for hijm. the only issues are that all the dust settles in the water and its gross by the next day, and its really really hard to clean. also if i want to put a hen in there with him (I had one who got super cold because she had no feathers on her back, thank you napoleon) i have to refill it because its not enough for both.