Caged Birds require a warm, stable habitat and the Thermo-Perch is the answer! Protect exotic birds from the harmful effects of air conditioning and cold drafts. Thermostatically controlled to an optimum body temperature. Safe, consistent source of warmth, stabilizing the bird's environment. The cord is kept safely away from the bird and protected with steel wire. Reduces avian stress. Made of sturdy scratch and bite resistant plastic. Attaches easily to wire cages. Irregular shape reduces foot cramping and pressure sores. Available in three sizes. Sizes Small 1/2" to 1" diameter x 10 1/2" long Small birds: Finches, Cockatiels, Parakeets, Canaries. Medium 5/8" to 1 1/4" diameter x 13" long Medium birds: Amazons, African Greys, Pionus Parrot . Large 1 1/4" to 2" diameter x 14 1/2" long Large birds: Macaws, large Cockatoos, Toucan . Thermo Perch - Heated Bird Perch hebipe Small Heated Bird Perch1/2" to 1" Diameter Length: 10 1/2" Availability: Usually ships the next business day. HBPS$36.00 Medium Heated Bird Perch5/8" to 1 1/4' Diameter Length: 13" Availability: Usually ships the next business day. HBPM$42.00 Large Heated Perch1 1/4" to 2" diameter x 14 1/2" long Availability: Usually ships the next business day. HBPL$44.00 Give your bird comfort all year with a thermo perch. This heated perch will keep them feeling warm anytime of the year.