Urban Soundscape: White-vented Myna choruses on Zhongqing road

Abstract

Urbanization has impacted both humans and birds, and certain bird species, like the white-vented myna choruses on Zhongqing Road, have adapted to human-dominated environments. A study in April 2023 utilized cameras and sound level meters to document this phenomenon. Two phases were conducted: the first phase recorded white-vented mynas' departure and return times at dawn and dusk, along with the sound pressure level of birdsong. The second phase measured indoor sound pressure levels during peak birdsong at nearby buildings. Additionally, a questionnaire assessed people's perception of the bird choruses. Results indicated that birdsong at dawn had a lower sound pressure level (68.8 dBA) compared to dusk (75.4dBA), but it persisted longer. The dominant frequency was around 3150 Hz. Three out of four indoor sites exceeded the regulatory standard of 60 dBA. The questionnaire showed that over 75% of nearby residents disliked the bird choruses, while 18% of passersby found them interesting and potentially attractive for visitation. In conclusion, urban bird choruses can impact indoor acoustic environments and lead to negative perceptions among residents. This study aimed to provide quantitative data and insights into residents' listening impressions of bird choruses on Zhongqing Road, offering valuable reference data for stakeholders.