When will the white waist bird change hair?

White waist birds change hair almost every season.There are many functions of changing hair, mainly to ask for puppets and winter, and most of the birds are changed only once a year.In order to ensure the health of white waist birds when changing hair, it is best to clean the cage regularly and clean up the fade hair, and at the same time, it must be wind -proof and warm.In addition, do not take a bath for the birds during the hair change.