PDD

PDD is a fatal disease that causes nervous system disorders in both domesticated and wild birds in the psittacine, or parrot, family worldwide.

前胃扩张症是一种致命疾病，它可以造成全世界范围内不管是驯养还是野生鹦鹉目或科底下鹦鹉神经系统紊乱。