A less expensive version of the Kozy Auto Refill, yet with a pleasant spiral pedestal design, this bird bath is made of durable materials to resist corrosion and scale build-up also. Water supply line is hidden in the pedestal. As with all Kozy bird baths, set-up is a breeze. Automatically refills after bird bath is emptied for cleaning. Air pressure forces water from the reservoir to rise to the same height in the birdbath. This bath also uses gravity to keep the bath filled...no electricity is needed. 3 year material and workmanship warranty. Will not crack in winter or in freezing temperatures.