Sex-specific responses to simulated territorial intrusions provide evidence for relaxed selection pressure on female song in Orchard Orioles

Journal of Field Ornithology, Journal Year: 2024, Volume and Issue: 95(3)

Published: Jan. 1, 2024

Female song has been significantly understudied compared with male song, and our understanding of how this elaborate signal trait may function limited as a result. Reconstruction ancestral singing behaviors indicate that Orchard Orioles (Icterus spurius) have reduced female tropical ancestors. In study, we found orioles on their breeding territories responded more strongly by all metrics to playback than playback. Given the high degree qualitative variation in response playback, results suggest be under relaxed selection pressure. Sexual dimorphism complexity frequency songs many lineages likely evolved result reduction or loss song. However, little research investigated functional significance these infrequent songs. More is required investigate specific pressures acting behavior songbirds.

Language: Английский

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Evolution of female song and duetting in the chaffinch ( Fringilla ) species complex

Journal of Avian Biology, Journal Year: 2023, Volume and Issue: 2023(3-4)

Published: Jan. 24, 2023

Female song is ancestral to songbirds and shows considerable phylogenetic signal, but its presence also appears be labile correlated with life‐history ecology. While previous studies have examined the evolution of female across species‐rich families, here we studied in island populations a recently diverged species‐complex, chaffinches (genus Fringilla ). We show this behaviour has evolved these populations, probably on two independent occasions. In F. teydea , performed loose duets males, while coelebs produced solo. Populations singing females showed year‐round territoriality were found regions low seasonality – both factors previously connected high rates singing. To determine relative saliency songs conspecifics, degree which they instigate territorial defence behaviours, series speaker playback experiments. c. canariensis could induce comparable responses male song, whilst duetting similar solo songs, therefore may relate within‐pair communication instead. Our results suggest can highly trait that evolve over short evolutionary timescales.

Language: Английский

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First documentation of vocal mimicry in female northern mockingbirds

Journal of Ornithology, Journal Year: 2022, Volume and Issue: 163(3), P. 749 - 756

Published: April 3, 2022

Language: Английский

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Female song can be over-looked in even the most intensively studied songbirds

Behavioral Ecology, Journal Year: 2022, Volume and Issue: 34(1), P. 160 - 161

Published: June 23, 2022

Language: Английский

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Loss of complex female song but not duetting in the ancestors of Carolina wrens

Ethology, Journal Year: 2022, Volume and Issue: 129(1), P. 47 - 54

Published: Nov. 7, 2022

Abstract Female singing and coordinated male–female duetting are often but not always found in the same species. Both behaviors more common tropical than temperate songbirds, few studies have differentiated between factors selecting for each. Here we investigate evolution of female vocal complexity coordination Carolina wrens ( Thryothorus ludovicianus ), one non‐tropical members a songbird family (Troglodytidae) that is well known producing duets. to sing; rather, they produce relatively simple, sex‐specific chatters, during territorial encounters. We analyzed field recordings show females coordinate these chatters with male songs at rates similar those observed some wren then used phylogenetic comparative methods evolutionary ancestors had were acoustically complex vocalizations current females, suggesting past selection against complexity. Levels males, contrast, changed little from ancestors. Our results suggest two aspects behavior, acoustic evolved independently different functions communication.

Language: Английский

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