الفهرس 
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Abstract
The present study was carried to give scope on some parasitic, bacterial and viral diseases that can affect some species of wild birds captured in different localities in Sharkia province of Egypt. A total of 225 wild birds of three species (86 cattle egrets, 94 Egyptian laughing doves and 45 Eurasian coots) were examined. These birds were collected alive either by hunting or trapping using mist-netting by professional hunters.
The birds were then transferred to the laboratory of Department of Pathology, Faculty of Veterinary Medicine, Zagazig University. Routine necropsies of the collected birds were performed. Specimens were taken from proventriculus, gizzard, intestine, liver, kidneys, lungs, heart, spleen, ovary and brain, and processed for staining. Also, sampling for parasitological, bacteriological and virological examinations was performed.
Parasitological Examination:
Clinical examination of the infected birds showed emaciation and pale mucous membranes. A number of nematodes and trematodes were observed in egrets, while doves revealed the presence of a number of cestodes. Coots showed no internal parasites. The majority of these helminth parasites were isolated from the intestine (Porrocaecum spp., Raillietina spp., Fimbriaria fasciolaris, Cotugnia digonopora and Davinea proglottina). A few of them were isolated from the proventriculus (Synhimantus invaginatus). Microscopical examination of the infected birds revealed cross and longitudinal sections of these parasites together with hemorrhage, congestion, necrosis and leukocytic infiltration of most organs. In all infested birds, these parasitic infestations were mixed with bacterial infection mostly Salmonella spp. and E. coli.