2023. Comparative Anatomical and Histological study of gall bladder in Mallard (Anas platyrhynchos) and Broiler fowl (Gallus gallus ). University of Thi-Qar Journal of agricultural research. 12, 2 (Oct. 2023), 15–25. DOI:https://doi.org/10.54174/utjagr.v12i2.254.