The purpose of the study was to understand the occurrence of indicator birds and their factors in order to confirm the biodiversity of alleys and narrow streets, which are familiar spaces for urban residents. The study was deemed significant because urban biodiversity has become increasingly important in recent years, and contact with nature has a positive effect on people. The study site consisted of 24 alleys in Kamigyo-ku, Kyoto. Bird surveys were conducted eight times each between September and November 2020. The results showed that bird species commonly found in urban areas accounted for the majority of the identified bird species. However, a few bird species that are not common in urban areas also appeared. The PCA results suggest that these bird species are influenced by the man-made structures and the percentage of area occupied by open space within a 50m radius buffer centered on the alley or narrow streets of interest. On the other hand, vacant lots are considered to have negative impacts such as degrading the urban landscape. Therefore, it is considered necessary to further investigate in detail the impact of the presence of vacant land in urban areas on cities, people, and organisms.
