What's wrong with the cuckoo without taking a bath?

Most of the way the cuckoo is not bathing is not related to the way of bathing.There are two ways to take a bath. One is a water bath. You need to prepare a pot of water to let the birds go in and wash.The other is a sand bath, which is similar to the water bath. Put a pot in the cage, but it is not water in the pot, but sand.It should be noted that the sand should be washed regularly, and it must be used after drying.