Abstract
We used a hieratical scale approach to evaluate avifauna species richness at Matsudo city, Chiba, Japan. Additive partitioning of species diversity and GLM were applied to understand which scale and factors have large contribution for the total species richness of urban avifauna community. As a result, woods area inside of the district scale mainly affected terrestrial birds diversity. On the other hand, the regional geographical factor and local aquatic factor along with grasslands affected water birds. It is considered that conserving woods area at each district scale and creating water areas with grasslands within the local scale are good for conserving urban avifauna richness.
