Abstract: In March 2013 and February 2014, the bird′s number and species of Ziwuling Nature Reserve, Shaanxi was investigated and recorded by line-transect and point count method. And more, the composition, structure, and seasonal dynamics of the avian community were analyzed and researched . A total of 42 bird species belonging to 27 families of 15 orders were recorded. The bird community was mainly composed of Passeriformes, totally 1590 individuals and 18 species, accounting for 47.98% of the total number of bird species. The species(33),number(1245), Shannon-Wiener index (4.94027) and Species evenness(0.97936) in summer were higher than those in the other three seasons, but the Superiority（0.03187） were lowest. Passer montanus, Phasianus colchicus, Pica pica, Cyanopica cyana, Parus major and Upupa epops were the dominant bird species distributed in four seasons, The Sorenson similarity index showed that the lowest species conversion rate was in summer-autumn avian community, the highest was in the autumn-winter avian community. In general, the avian community stability was high in Ziwuling Nature Reserve.

Key words: avian, community feature, seasonal dynamic