Directionality of avian vocalizations: a laboratory study
Open accessAbstract
Pure tones of 1, 2, 4, 8, and 10 kHz were broadcast from the body of a dead starling Sturnus vulgaris, and sound pressure levels were measured through 360° in three planes. At high frequencies (8 and 10 kHz) there were large troughs in sound pressure levels in the acoustic "shadow" of the bird's body. A physical model based on sound interference phenomena predicts similar patterns of sound pressure levels.
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A model of the vocal apparatus as a vibrating piston suspended in a baffle has adequately explained the basic patterns observed in birds, bats, cetaceans and humans.
“A model of the vocal apparatus as a vibrating piston suspended in a baffle has adequately explained the basic patterns observed in birds, bats, cetaceans and humans (Flanagan, 1972; Hartley and Suthers, 1989, 1990; Hunter et al., 1986; Larsen and Dabelsteen, 1990; Mogensen and Møhl, 1979; Pilleri, 1990; Stevens, 1997; Strother and Mogus, 1970).”
From Directional acoustic radiation in the strut display of male sage grouse <i>Centrocercus urophasianus</i> (1999) · cites this paper as Hunter et al., 1986
The Introduction (page unavailable) models avian sound directionality using a circular vibrating piston set in a sphere representing the bird’s head or body. This supports the claim’s basic modeling point for birds, but the cited passages do not establish that this model explains patterns in bats, cetaceans, or humans; they also describe a sphere rather than a baffle. (LLM, conf=0.84)
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- Authors
- Hunter, Kacelnik, A., Roberts, J., & Vuillermoz, M.
- Affiliations
- University of Maine (US)
- University of Oxford (GB)
- Venue
- The Condor
- Publisher
- Oxford University Press (OUP)
- Published
- 1986-08
- Volume
- 88
- Issue
- 3
- Pages
- 371-375
- ISSN
- 0010-5422 (ISSN-L)
- 1938-5129
- OpenAlex
- W2335464350
- Cited by
- 31
- References
- 14
- Citations by year
- 2026: 1 · 2025: 1 · 2023: 1 · 2021: 1 · 2019: 1 · 2018: 1 · 2016: 1 · 2012: 1
- FWCI
- 0.44
- Type
- journal article
- Language
- en
- Open access
- Locations
- Ornithological Applications (publishedVersion)
- Digital Commons - University of South Florida (University of South Florida) (submittedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Developmental Biology › Animal Vocal Communication and Behavior
- Physical Sciences › Environmental Science › Ecology › Avian ecology and behavior
- Physical Sciences › Environmental Science › Ecology › Marine animal studies overview
- Keywords
- bird vocalizations, sound directionality, Sturnidae, Sturnus vulgaris, sound pressure level, acoustic shadowing, acoustic interference, body-borne sound, pure tones, high-frequency sound
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