Related Experiment Video
Updated: May 21, 2026
08:44
Eliciting and Analyzing Male Mouse Ultrasonic Vocalization (USV) Songs
Published on: May 9, 2017
Urbanization-related vocal variation in passerines: a comparative study.
Mónika Jablonszky1,2, László Zsolt Garamszegi1
1Evolutionary Ecology Research Group, HUN-REN Centre for Ecological Research, Institute of Ecology and Botany , Vácrátót, Hungary.
Proceedings. Biological Sciences
|May 19, 2026
Summary
Urbanization impacts bird songs, with wider frequency ranges in cities. However, these song changes don't explain why some bird species thrive in urban environments while others don't.
Area of Science:
- Ecology
- Bioacoustics
- Urban Ecology
Background:
- Urbanization poses significant threats to biodiversity.
- Avian vocalizations are known to change with urbanization, but the specifics remain unclear.
Purpose of the Study:
- To investigate how urbanization affects bird songs across and within species.
- To explore the role of species-specific traits in vocal adjustments to urban environments.
Main Methods:
- Phylogenetic comparative analysis of 65 European passerine species.
- Examined relationships between urbanization and song traits (dominant frequency, frequency range).
- Considered species traits like sociality, migration, vocal complexity, and urban occurrence.
Main Results:
- Dominant frequency range widened in more urbanized areas across species.
- Urbanization-related changes in dominant frequency were species-specific.
- Species traits did not predict vocal differences related to urbanization.
- Urban occurrence was not linked to song characteristics or their urbanization-related changes.
Conclusions:
- Urbanization does not universally alter bird song frequency.
- Vocalization changes do not appear to hinder birds' presence in cities.
- Further research is needed on the fitness consequences of altered songs in urban noise.
- Conservation efforts should focus on preserving urban habitats to support bird diversity.
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