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Study Finds Certain Birdsong Qualities Are More Pleasing to Humans
Researchers found 84 listeners rated the common blackbird highest, and said softer, more complex songs with narrower frequency ranges sounded most pleasant.
Researchers at the University of Tübingen asked 84 people to rate 123 wild bird species, identifying the Eurasian blackbird as most pleasant with an average rating of 4.52 out of 5.
While people intuitively expected simple, repetitive sounds to be most pleasant, the study showed that more intricate birdsongs actually received higher ratings, alongside preferences for softer vocalizations with narrower frequency ranges.
Among other species, the European goldfinch scored 4.26, followed by the European robin at 4.04 and the blue tit at 3.92, whereas the barn owl's raspy screech received the lowest average rating at 1.32.
Dr. Olga Feher of the University of Warwick warned that focusing only on charismatic, melodious birds could negatively impact conservation efforts for less pleasant-sounding species, while Dr. Robert Lachlan of Royal Holloway noted biological factors likely influence these preferences.
Future research aims to determine if these human preferences hold consistent across different cultures and environments, as Randler suggested the findings could help city planners design better acoustic environments by integrating natural sounds like birdsong into urban spaces.
When birds trinate, humans may feel a little calmer. However, some bird vocalizations seem to be especially pleasing to the human ear, and scientists have already begun to understand why.