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Horses Whinny Like Singing Whistles
23 Feb
Summary
- Horse whinnies combine whistling and singing simultaneously.
- High-pitched whinny sounds are produced by the larynx as a whistle.
- Vocal fold vibration creates the lower-pitched sounds in a whinny.
Scientists in France have uncovered the intricate mechanics behind a horse's whinny, revealing it as a simultaneous blend of whistling and singing. This discovery, published in Current Biology, explains how horses produce their distinct vocalizations.
The research indicates that the higher frequency in a whinny is generated not by vocal fold vibration but by air forced through the larynx, essentially using it as a whistle. This aerodynamic whistling mechanism has been observed in smaller animals but is documented here for the first time in a large mammal.
Lower-pitched sounds within the whinny are produced through the vibration of the horse's vocal folds, a process akin to human singing. To confirm the whistling phenomenon, researchers used helium, observing a significant frequency increase when it was forced through the larynx, a characteristic of whistle-like sounds.
This study significantly advances our understanding of equine vocal communication, a field that has remained largely mysterious despite the long history of horse domestication. Further research could elucidate the evolutionary history and meanings of various horse vocalizations.
