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Song overlapping, noise, and territorial aggression in great tits
Date
2020-05-01
Author
Akcay, Caglar
Porsuk, Y. Kagan
Avsar, Alican
Cabuk, Dilan
Bilgin, Cemal Can
Metadata
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Communication often happens in noisy environments where interference from the ambient noise and other signalers may reduce the effectiveness of signals which may lead to more conflict between interacting individuals. Signalers may also evolve behaviors to interfere with signals of opponents, for example, by temporally overlapping them with their own, such as the song overlapping behavior that is seen in some songbirds during aggressive interactions. Song overlapping has been proposed to be a signal of aggressive intent, but few studies directly examined the association between song overlapping and aggressive behaviors of the sender. In the present paper, we examined whether song overlapping and ambient noise are associated positively with aggressive behaviors. We carried out simulated territorial intrusions in a population of great tits (Pares major) living in an urban-rural gradient to assess signaling and aggressive behaviors. Song overlapping was associated negatively with aggressive behaviors males displayed against a simulated intruder. This result is inconsistent with the hypothesis that song overlapping is an aggressive signal in this species. Ambient noise levels were associated positively with aggressive behaviors but did not correlate with song rate, song duration, or song overlapping. Great tits in noisy urban habitats may display higher levels of aggressive behaviors due to either interference of noise in aggressive communication or another indirect effect of noise.
Subject Keywords
Animal Science and Zoology
,
Ecology, Evolution, Behavior and Systematics
URI
https://hdl.handle.net/11511/34617
Journal
BEHAVIORAL ECOLOGY
DOI
https://doi.org/10.1093/beheco/araa030
Collections
Department of Biology, Article
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C. Akcay, Y. K. Porsuk, A. Avsar, D. Cabuk, and C. C. Bilgin, “Song overlapping, noise, and territorial aggression in great tits,”
BEHAVIORAL ECOLOGY
, pp. 807–814, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34617.