Compared with omnivorous pheasants, insectivorous birds and raptorial birds Koklass's digestive system is similar to the typical phytophagous birds. 与杂食性鸡类、食虫鸟类及猛禽比较,勺鸡的消化系统具有典型植食性鸟类的特征。
Morphological Characteristics and Function of Raptorial Tarsometatarsus 猛禽类跗跖骨形态特征与功能的分析