Singh S P
Gegenbaurs Morphol Jahrb. 1975;121(1):121-4.
Histological observations were made on the oesophagus of 2 birds showing different feeding habits. The birds taken for study included frugivorous form, M. haemacephala and H. smyrnensis, which is primarily piscivorous. Various histological modifications such as relative development of mucosal folds, mucous-secreting glands and musculature have been shown to be correlated with the specific feeding habits of the birds.
对2只具有不同食性的鸟类的食管进行了组织学观察。用于研究的鸟类包括食果性的红嘴蓝鹊和主要食鱼性的黑鹳。已表明各种组织学改变，如粘膜皱襞、分泌粘液的腺体和肌肉组织的相对发育，与鸟类的特定食性相关。
