Pigeon is one of the domestic fowls, which has an important role in transmissible diseases to industrial poultry and zoonoses. However, there are only a few papers around the parasitic diseases and related lesions in this bird.

In this study 100 Pigeons have prepared from different areas of the city of Kerman randomly. After necropsy, following results were obtained: 75% of pigeons were infected by one parasite at least. From 28 Pigeons, which infected by cestodes, 27 pigeons infected by Raillietina tetragona and 1 Pigeon by Cotugnia digonopora. Also 1 pigeon infected by nematode Ascaridia columbae. The aforementioned cestodes and nematode isolated from small intestines. The only protozoa, which isolated from 56 pigeons, were Trichomonas gallinae. Histopathologic examinations revealed lesions such as necrotic and hemorrhagic enteritis (p<0.001) and inflammation, papillomatosis and hyperkeratosis in crop (p<0.001). Increased frequencies of Raillietina spp. are attributed to high frequency of their intermediate host (beetle). Adult pigeons frequently were carrying the trichomonads and in special conditions resulted in tissue lesions.