Vol. 41 No. 2 (2026)

Acoustic characterization of male Grass Wren (Cistothorus platensis) calls during the breeding season in a population from the Uspallata Valley, Mendoza, Argentina

Abstract

Calls are short, structurally simple vocal signals compared to songs, and play a key role in intra- and interspecific communication. The acoustic structure of calls within the genus Cistothorus has not been studied in South American populations. Here we describe the acoustic structure of the calls of the Grass Wren (Cistothorus platensis). We recorded males during the breeding season in a population from the Uspallata Valley, Mendoza, Argentina, and classified their calls according to their spectral and temporal parameters. We identified two different call types within the population, termed ‘call A’ and ‘call B’. Call A had a longer duration, narrower bandwidth, and lower peak frequencies than call B. Calls with different structures suggest different behavioral contexts and/or functions. This study provides the first description of the species’ calls and establishes a baseline for future studies assessing their function and possible variation among populations.

References

How to cite

Luciana A. López, Paula S. Garrido Coria, Gustavo J. Fernández, Paulo E. Llambías (2026). Acoustic characterization of male Grass Wren (Cistothorus platensis) calls during the breeding season in a population from the Uspallata Valley, Mendoza, Argentina. El Hornero, Vol. 41 No. 2 (2026). https://doi.org/10.56178/eh.v41i2.1545

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