en Original Original <p dir="ltr" style="text-align: justify;"><strong>Introduction:</strong> In chick embryo, endodermal component of the liver becomes split into 2&nbsp;diverticula in a short time. The anterior diverticulum lies to the left of the ductus venosus&nbsp;and the posterior one to its right side. As the liver primordium grows, it is invaded by the&nbsp;embryonic veins. Based on the different incubation time periods and evolutionary origin of&nbsp;avian species, various times for morphogenetic events of the liver are expected. The chukar&nbsp;partridge (Alectoris chukar) belongs to a common family with the chicken and shows 3 to 4&nbsp;days longer embryonic period. This study was designed to describe normal histological and&nbsp;histochemical events of the liver histogenesis of the chukar partridge. It would be interesting&nbsp;to see how the time and sequence of developmental events of liver histogenesis are similar to&nbsp;those of the chick embryo.<br> <strong>Methods: </strong>In this study, partridge (Alectoris chukar) embryos were studied from day 5 to 24&nbsp;of incubation. In the course of the study, their liver 5-&mu;m thick sagittal and transverse sections&nbsp;were prepared. Then, the sections were stained with hematoxylin-eosin (H&E) and Periodic&nbsp;Acid Schiff (PAS) methods and studied under the light microscope.<br> <strong>Results:</strong> During the histogenetic study of the chukar partridge liver, we noted the structures and&nbsp;events such as the dark and light hepatocytes, mitotic divisions, sinusoids and kupffer cells, as&nbsp;well as the glycogen storage in the hepatocytes and their development, also changes due to the&nbsp;time of incubation period.<br> <strong>Conclusion:</strong> Although the sequential events of the liver histogenesis of chukar partridge&nbsp;follow the general pattern of the other birds, some differences exist in the time of formation&nbsp;liver components compared to other studied species.</p> Embryology, Liver, Galliformes, Histology 129 136 http://anatomyjournal.ir/browse.php?a_code=A-10-110-1&slc_lang=en&sid=1 Shadi Hashemnia shadihashemnia@uk.ac.ir 10031947532846001168 10031947532846001168 Yes Department of Basic Science, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran. Bahador Shojaei bshojaei@uk.ac.ir 10031947532846001169 10031947532846001169 No Department of Basic Science, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran Hamed Razavi b_shojaei@yahoo.com 10031947532846001170 10031947532846001170 No Department of Basic Science, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran