Grossly, the lungs were congested (Fig. 3) but there were no other gross lesions in any organs. Microscopically, in lungs, there were lots of eosinophilic infiltration and blood vessels were congested. The congested area contains aberrant structure suggesting the presence of haemoprotozoa (Fig. 4). Few RBC displayed multiple parasitic inclusions. Comma shaped gamete of haemoprotozoa were seen in between the cord of hepatocytes in liver (Fig. 5). Schizont like structures were seen in the alveolar epithelium of the affected lung accompanied with neutrophilic infiltration. The lungs alveoli were distended and ruptured in advance stage (Fig. 6). In kidneys, the capillaries were congested and hemozoinic pigments were present in congested blood. Renal tubules were necrosed with the disintegration of necrotic cellular mass accompanied with focal accumulation of reactive cells (Fig. 7). These findings are some what similar to the result described by Yin et al. (2002), who studied the pathology of experimentally infected L. caulleryi infection in 300 chickens. This change might be due to the liberation of gametocytes from the affected cells.