Black Jacobin hummingbirds vocalize above the known hearing range of birds
| Autor: | Marcela Fernández-Vargas, Claudio V. Mello, Christine V. Portfors, Christopher R. Olson |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Florisuga fusca Vocal communication biology Range (biology) High frequency hearing Zoology Acoustics biology.organism_classification General Biochemistry Genetics and Molecular Biology Birds 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Hearing biology.animal Jacobin Hearing range Animals Atlantic forest Hummingbird Vocalization Animal General Agricultural and Biological Sciences 030217 neurology & neurosurgery Brazil |
| Zdroj: | Current biology : CB. 28(5) |
| ISSN: | 1879-0445 |
| Popis: | Summary Hummingbirds are a fascinating group of birds, but some aspects of their biology are poorly understood, such as their highly diverse vocal behaviors. We show here that the predominant vocalization of black jacobins ( Florisuga fusca ), a hummingbird prevalent in the mountains of the Brazilian Atlantic Forest, consists of a triplet of syllables with high fundamental frequency (mean F0 ∼11.8 kHz), rapid frequency oscillations and strong ultrasonic harmonics and no detectable elements below ∼10 kHz. These are the most common vocalizations of these birds, and their frequency range is above the known hearing range of any bird species recorded to date, including hearing specialists such as owls. These observations suggest that black jacobins either have an atypically high frequency hearing range, or alternatively their primary vocalization has a yet unknown function unrelated to vocal communication. Black jacobin vocalizations challenge current notions about vocal communication in birds. |
| Databáze: | OpenAIRE |
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