The patented Thermo-Perch (Small) helps protect your exotic birds from the harmful effects of air conditioning and cold drafts. Cold is a major contributor to health problems for exotic birds, and providing warmth is the first step that avian experts and veterinarians turn to. Thermostatically controlled, Thermo-Perch provides a safe, consistent source of warmth, stabilizing the bird"s environment. Made of sturdy scratch and bite resistant plastic, Thermo-Perch attaches easily to wire cages. Its irregular shape reduces foot cramps and pressure sores, providing orthopedic benefits.