Bird's Species Richness and Biological Characteristic in Sarakhs Region in north-eastern Iran

Sarakhs is one of the most biologically diverse regions in Iran, encompassing an elevational span of 250-2500m, and 5472 km2 and high habitat diversity. Sarakhs also is geographically isolated form central Iran by Hezar Masjed and Mazdoran Mountain in south. A Sarakhs region is contact zone between West and east Palaearctic avifauna. During More than 14 year fieldworks since 2000 we investigated avifauna of the region, our result show high species richness in small area in the Sarakhs, more than 225 birds species are reported from the area, that some of them are only restricted to Sarakhs in Iran (for example Turkestan tit, Oriental pigeon). More fieldworks and bird ringing are recommended for further avifauna investigation in the area.