The shelducks, genus Tadorna, are a group of large birds in the Tadorninae subfamily of the Anatidae, the biological family that includes the ducks and most duck-like waterfowl such as the geese and swans. A total of twenty bird shelduck (Tadorna tadorna) were used in this study. These birds were hunted out from the South Iraq marshes by use of catch drag (actuality ten males and ten females). They were reared for one week to investigate the morphology, anatomy, genetic and physiological parameters. The results showed that red blood cell count million/cm for male was 3.25 and 3.17 for female; the white blood cell count thousands/cm³ for male was 26.12 and 24.76 for female; the Hemoglobin level% for male was 48.98 and 44.96 for female; the packed cell volume% for male was 32.54 and 31.48 for female; the lymphocytes % for male was 27.43 and 27.17 for female; the monocytes % for male was 13.37 and 13.08 for female; the hetrophils % for male was 52.93 and 52.69 for female; the eosinophils % for male was 3.84 and 3.58 for female; the basophils% for male was 2.05 and 2.05 for female. The results showed that the first and second pair appeared as metacentric, the third pair was subtelocentric and the pairs no.4,6,7,8&9 were telocentric while pairs no.5,10,11,12&13 were acrocentrics. The chromosome Z was identified as a submetacentric with a size larger than that of the fourth pair and the chromosome W was small acrocentric and easily identified
