What is the obvious humming of the parrot breathing?

The parrot's breathing has a clear humming sound, indicating that its respiratory tract is problematic, it may be infected, or it may be diseases such as bronchitis or pulmonary disease. This requires timely medication.Generally, this disease is caused by changes in temperature. It must be kept warm in daily feeding to avoid it frostbite. Especially after bathing, use a towel to wrap it, and then slowly dry it.