鸟类究竟有没有嗅觉，这是学术界长期以来一直争论不休的一个问题。众所周知，兽类的嗅觉特别发达，而鸟类的鼻孔长在坚硬的角质嘴巴上，缺乏兽类那样的肉质鼻腔，又无爬行动物那样的嗅觉器官——犁鼻器，所以嗅觉已完全或几乎完全退化了，只有极少数猛禽还存有嗅觉。为此，科 Is there any sense of smell for birds? This is an issue that has long been debated academically. It is well known that the smell of mammals is particularly well-developed. Birds' nostrils grow on stiff keratinous mouths, lacking fleshy nasal passages like mammals and no olfactory organs like voles, so the sense of smell has been completely or almost Completely degraded, only a handful of birds of prey also have a sense of smell. To this end, Section