A Lift-The-Flap concept. During my research, I discovered that the 'cuckoo' call is created quite simply with two bellows. When the air is pushed through, one whistles 'cuck' , followed by the second responding with 'coo'.
A Lift-The-Flap concept. During my research, I discovered that the 'cuckoo' call is created quite simply with two bellows. When the air is pushed through, one whistles 'cuck' , followed by the second responding with 'coo'.
