Enjoy bird songs? Don't have great hearing or a bird feeder? Choose this green bordered Audubon Singing Clock in the 13 inch size. One of twelve different North American bird songs announces each hour. Hear one of 12 of the most popular North American bird's songs announce each hour. Beautiful pictures grace the dial. Light sensor deactivates the sounds in the dark. Officially licensed by the National Audubon Society. The Audubon Singing Bird Clock features bird songs recorded by the Cornell Laboratory of Ornithology. Starting at 12:00: summer tanager, song sparrow, purple martin, American goldfinch, wood thrush, common yellowthroat, eastern meadowlark, Carolina wren, eastern bluebird, red-winged blackbird, yellow warbler, hermit thrush. Mark Feldstein designed this clock. Sturdy.