Marukan Yorisoi Heater for Small Birds, Birds, Parakeets, Tori (bird), Heater, Perch, Hot Tori Dan This is a hot heater for birds. It is in very clean condition. Please check the size and condition in the photos. The box has a little damage. I will include an extra screw fastener for attaching it to a cage. This is attached to the main unit. For creating a warm environment for small birds. Electricity costs are only 0.14 yen per hour, making it very energy efficient. Please consider introducing it to your cute pet.