Here's the 25th Anniversary Edition of the Original Singing Bird Clock. At the top of each hour, the clock produces an authentic bird song that corresponds to the image on the clock face. You will delight in the unique songs of such birds as the American Robin, Northern Cardinal, Mourning Dove and more. The sound automatically turns off when the room is dark. Plastic and glass. Includes a bird identification booklet. Req. 3 "AA" batteries (sold separately). Keyhole hanger on back. 13"Dia.