# Background noise but not urbanization level impacted song frequencies in an urban songbird in the Pearl River Delta, Southern China

> Research article (Global Ecology and Conservation, 2021) · cited 16× · AI/ML

**Wikidata**: [openalex:W3175894619](https://www.wikidata.org/wiki/openalex:W3175894619)  
**Source**: https://4ort.xyz/entity/background-noise-but-not-urbanization-level-impacted-song-frequencies-in-an-urban-songbird-in-the-pearl-river-delta-sout