Sci Parasitol 16(3):123-127, September 2015 ISSN 1582-1366 SHORT RESEARCH NOTE 123 Gastrointestinal helminths of the Caspian snowcock (Tetraogallus caspius) partridge from the North Khorasan province, Iran Amin Ahmadi 1  , Saeid Yaghfoori 2 , Vali Abedi 3 , Hassan Borji 4 1 – MS.c, Ph.D Candidate of Veterinary Parasitology, Department of Pathobiology, School of Veterinary Medicine, Shiraz University, P.O. Box 1731, Shiraz 71345, Iran. 2 – MS.c, Ph.D Student of Veterinary Parasitology, Department of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad, Iran. 3 – D.V.M, PhD. of Veterinary Parasitology, Office of Veterinary Medicine Bojnord – North Khorasan. 4 – Associate professor of Veterinary Parasitology, Department of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad, Iran. Correspondence: Tel. +98 9130363668, E-mail Amin_Ahmadi@shirazu.ac.ir Abstract. The aim of this study was to establish the recognition of the parasitic infection of the Caspian snowcock (Tetraogallus caspius) partridge from the North Khorasan province that is one of the provinces located at the north east of Iran. In this study, 180 Caspian snowcock (Tetraogallus caspius) partridges were randomly collected from different parts of North Khorasan region, during 2011-2012 to determine the presence and intensity of helminth infections in local Partridge of this geographic region. In the examination of alimentary tracts of these 180 partridges, it was found that 136 partridges were infected with parasitic helminths. At 132 cases were occurred infection with the cestode and 4 were infected with the nematodes.The number of partridges chickens infected with the both cestodes and nematodes were two. This study indicates the severity of the prevalence of gastrointestinal helminth infections in the indigenous Caspian snowcock of the North Khorasan province that has its own agro-climatic characteristics, and the country of Iran with highly diverse geographic and agro-climatic conditions. Keywords: Partridge; Anonchotaenia globata; Raillietina tetragona; Ascaridia galli; Heterakis dispar; Trichostrongylus tenuis; Iran. Received 25/06/2015. Accepted 04/08/2015. Introduction The Caspian snowcock (Tetraogallus caspius) is a common species in Turkey, Armenia Azerbaijan, and throughout the Alborz Mountains of the North of Iran. It is one of the five species of snowcock in the genus Tetraogallus, part of the pheasant family (Phasianidae). The population is thought to be declining, but not sufficiently rapidly to