The present study is designed to identify the morphological description of the digestive tract in two species of different birds; these birds were Taeniopygia guttata (zebra finch) which is granivorous and Sturnus vulgaris (Starling) which is omnivorous. The results showed that the digestive canal of both birds was similar in the essential structure. It begins with the oropharyngeal cavity, which starts with the beak. The beak appeared different in the outer shape, which depends on the feeding. The mouth palate in both birds contains slit localized in the hard palate. This slit represents as beak nostril. The tongue appeared at the bottom of the oropharyngeal cavity. The esophagus appeared as a muscular tube containing the crop, which is divided into two parts the cervical part and the thoracic region, while the stomach was composed of two clear parts in both birds. The first one was a conical shape called proventriculus. The second was a spherical shape called the gizzard, and they are separated by a transitional zone called the isthmus, which was more apparent in the zebra finch, while the small intestine developed mostly in both birds. It is divided into three parts, which were the duodenum, jejunum, and ileum, as well as the large intestine, which appeared as tube shape, which is the rectum. There was a pair of caecum located in the contact area of the ileum and rectum. The digestive canal ends with the cloaca in both birds. These results indicate that there are differences in the anatomical structure of the gastrointestinal tract organs between the two birds to be compatible with the quality and method of obtaining food.

中文翻译：

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Taeniopygia guttata（斑胸草雀）和Sturnus vulgaris（椋鸟）消化道的形态学描述

本研究旨在确定两种不同鸟类的消化道形态描述；这些鸟类是杂食性的 Taeniopygia guttata（斑胸草雀）和杂食性的 Sturnus vulgaris（八哥）。结果表明，两种鸟类的消化道在基本结构上相似。它从口咽腔开始，从喙开始。喙在外形上出现不同，这取决于喂食。两只鸟的嘴巴都包含位于硬腭的狭缝。这个狭缝代表喙鼻孔。舌头出现在口咽腔底部。食道表现为含有作物的肌肉管，分为颈部和胸部两部分，而两只鸟的胃由两个清晰的部分组成。第一个是称为腺胃的圆锥形。第二种是称为gizzard的球形，它们被称为地峡的过渡区隔开，这在斑胸草雀中更为明显，而小肠主要在两种鸟类中发育。分为十二指肠、空肠、回肠三部分，还有呈管状的大肠，即直肠。有一对盲肠位于回肠和直肠的接触区。两只鸟的消化道都以泄殖腔结束。这些结果表明，两只鸡在胃肠道器官的解剖结构上存在差异，与获取食物的质量和方法相适应。第一个是称为腺胃的圆锥形。第二种是称为gizzard的球形，它们被称为地峡的过渡区隔开，这在斑胸草雀中更为明显，而小肠主要在两种鸟类中发育。分为十二指肠、空肠、回肠三部分，还有呈管状的大肠，即直肠。有一对盲肠位于回肠和直肠的接触区。两只鸟的消化道都以泄殖腔结束。这些结果表明，两只鸡在胃肠道器官的解剖结构上存在差异，与获取食物的质量和方法相适应。第一个是称为腺胃的圆锥形。第二种是称为gizzard的球形，它们被称为地峡的过渡区隔开，这在斑胸草雀中更为明显，而小肠主要在两种鸟类中发育。分为十二指肠、空肠、回肠三部分，还有呈管状的大肠，即直肠。有一对盲肠位于回肠和直肠的接触区。两只鸟的消化道都以泄殖腔结束。这些结果表明，两只鸡在胃肠道器官的解剖结构上存在差异，以适应食物的质量和获取方法。第二种是称为gizzard的球形，它们被称为地峡的过渡区隔开，这在斑胸草雀中更为明显，而小肠主要在两种鸟类中发育。分为十二指肠、空肠、回肠三部分，还有呈管状的大肠，即直肠。有一对盲肠位于回肠和直肠的接触区。两只鸟的消化道都以泄殖腔结束。这些结果表明，两只鸡在胃肠道器官的解剖结构上存在差异，与获取食物的质量和方法相适应。第二种是称为gizzard的球形，它们被称为地峡的过渡区隔开，这在斑胸草雀中更为明显，而小肠主要在两种鸟类中发育。分为十二指肠、空肠、回肠三部分，还有呈管状的大肠，即直肠。有一对盲肠位于回肠和直肠的接触区。两只鸟的消化道都以泄殖腔结束。这些结果表明，两只鸡在胃肠道器官的解剖结构上存在差异，与获取食物的质量和方法相适应。而小肠主要在两只鸟身上发育。分为十二指肠、空肠、回肠三部分，还有呈管状的大肠，即直肠。有一对盲肠位于回肠和直肠的接触区。两只鸟的消化道都以泄殖腔结束。这些结果表明，两只鸡在胃肠道器官的解剖结构上存在差异，与获取食物的质量和方法相适应。而小肠主要在两只鸟身上发育。分为十二指肠、空肠、回肠三部分，还有呈管状的大肠，即直肠。有一对盲肠位于回肠和直肠的接触区。两只鸟的消化道都以泄殖腔结束。这些结果表明，两只鸡在胃肠道器官的解剖结构上存在差异，与获取食物的质量和方法相适应。两只鸟的消化道都以泄殖腔结束。这些结果表明，两只鸡在胃肠道器官的解剖结构上存在差异，与获取食物的质量和方法相适应。两只鸟的消化道都以泄殖腔结束。这些结果表明，两只鸡在胃肠道器官的解剖结构上存在差异，与获取食物的质量和方法相适应。