By observing and describing the anatomical trait of bald coot 's digestive apparatus , and comparing with water - fowl , grouse pheasant and so on , this paper discover that bald coot has no thv element bursa as waterfowl .
通过观察描述骨项鸡消化系统各器官的解剖学特点，并与水禽、松鸡、雉鸡等的消化器官进行比较，发现与水禽相似，骨项鸡无嗉囊。
THV