Palabras clave
aprendizaje
Chingolo
dialectos
Parque Nacional Ansenuza
variación vocal
Cómo citar
Resumen
Los cantos de muchas especies de aves varían entre sitios dando origen a dialectos. Se describe por primera vez la variación del canto del Chingolo (Zonotrichia capensis) en el Parque Nacional Ansenuza, Provincia de Córdoba. Para ello se grabaron durante 2024 y 2025 los cantos espontáneos de los chingolos de la localidad de Isla Larga y se los complementó con aquellos existentes en las principales bibliotecas de sonido (Macaulay Library y Xeno-Canto). El análisis cualitativo de los mismos mostró que los cantos de Isla Larga poseen una variante única de trino que incluye al final una nota tonal no modulada y de baja frecuencia que jamás ha sido registrada en la Argentina. Esta variante también se observó en el departamento de Mitre, en la provincia de Santiago del Estero. Estos cantos difieren además en sus variables acústicas de aquellos grabados al sur de la laguna, en la localidad de Miramar. En particular, los cantos del norte (Isla Larga/Mitre) poseen trinos significativamente más rápidos (con menor separación temporal entre notas), con mayor número de notas y frecuencias y anchos de banda menores que los de Miramar. Se discuten los posibles factores que podrían haber originado estas diferencias, así como sus implicancias para la comunicación a larga distancia.
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