Thank you for viewing. This bird heater with a perch allows birds to snuggle up when it's cold, enabling them to regulate their own body temperature. * Mimics a mother's body temperature (approx. 40°C) * Includes 3 detachable perches * 2-WAY design: Remove the perch and attach it horizontally to warm a nest box from below. * Estimated electricity cost per hour: Approximately 0.14 yen Suggested Retail Price (excluding tax): OPEN Product Size (mm): Heater: W130 x D15 x H190mm Perch: (Small) φ10 x Length 100mm (Large) φ18 x Length 120mm Target Animals: Small birds JAN: 4906456570042 Product Number: RH-212 \* The photos show everything included. Regarding the holes for attaching the perch to the main unit, there was a part to cover unused holes, but I threw it away because the birds were removing it and looked like they might swallow it (I don't think it affects usage). I used it for about 2 months this season. I am also selling another of the same product.