nonvocal

There are also nonvocal sounds, Dr. Webster said: Some birds snap their wings, some drum on trees and others rub their feathers together as if playing the violin.

“Vocal play signals frequently accompany other nonvocal behaviours, such as the play face in primates … or the play bow in dogs,” according to a 2021 study in the journal Bioacoustics.

In 2020 scientists compared phylogenies of around 1,800 vocal and nonvocal species and estimated that acoustic communication arose roughly 100 million to 200 million years ago in association with nocturnal activity.

Lowe gathered many of the score’s nonvocal sounds on location as the film was being shot, recording the buzzing of electrical boxes and insects around Chicago — which he then sampled and turned into unnerving atmospheres.

The Ruffed Grouse, a ground-nesting bird that lives in dense forest, is also known for a nonvocal sound.