Bits and Pieces - Window Birds Clock - Decorative Hanging Wall Clock - Beautiful Home D&eacute;cor Hang our wall clock from the mechanism on the back and shadows are cast creating a lifelike dimensional window. Each window features a different whimsical, silhouetted bird. Makes a great gift for bird lovers. The silver toned quartz clock requires on AA batter, not included. Measures 17-5/8 square.