Part of the Forest Critters collection from Michael Carr Designs, these cute and lifelike creatures add personality and charm to any yard or garden. "Chirps" with the sounds of actual birds when motion sensor is activated. The sound the Robin chirper makes is that of an actual robin. The chirper is activated by a motion sensor and includes an on/off switch. The chirper is powered by 3 AA batteries (included) and each chirp lasts approximately 15 seconds. Each critter is hand-made from durable high-quality polyresin and then hand painted. The durable polyresin has a U.V. coating that resists cracking or chipping from the sun.