# Urban background noise affects breeding song frequency and syllable-type composition in the Northern Mockingbird

> Research article (Ornithological Applications, 2019) · cited 24× · AI/ML

**Wikidata**: [openalex:W2955609567](https://www.wikidata.org/wiki/openalex:W2955609567)  
**Source**: https://4ort.xyz/entity/urban-background-noise-affects-breeding-song-frequency-and-syllable-type-composition-in-the-northern-mockingbird