All you have to do is create a sound near the bird on the branch and it will start to shake its head open its mouth shake its wing and tail and sing a bird song. The birds bright singing will relax your body and mind and bring you back to the great nature where you can be entirely freed from worry and enjoy a moment of placidity.Features. A beautiful decoration for your home.. Powered by 3 x AA batteries.. Sound activated - bird flaps and sings when there is a noise.. Sound activation works by detecting increase in noise level so it will work even in noisy environments.. Can be used as a security device bird things when someone makes noise.. Size - 10.5 T x 7 Dia. in.. Color - Red.. Dimension - 8 L x 5 W x 9 H in.