A song for the South also: defining birdsong in global terms

Bonnevie, Bo T; Craig, Adrian J. F.

doi:10.1111/ibi.12627

Cited by 4 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They used this distribution to establish a threshold to distinguish among syllables versus less-stereotyped, independent elements within songs and they successfully applied this approach in a comparative framework (Mota & Cardoso, 2001;Cardoso & Mota, 2007). Also, we note that other disciplines recommend neurological, production, perception, or function-based approaches for delimiting acoustic structure (Spector, 1994;Gerhardt & Huber, 2002;Blumstein, 2010;Owren, Rendall & Ryan, 2010;Peshek & Blumstein, 2011;Bonnevie & Craig, 2018).…”

Section: Approaches For Quantifying Animal Soundsmentioning

confidence: 94%

“…However, even within taxa, acoustic terminology can be inconsistent (e.g. Thompson et al ., 1994; Catchpole & Slater, 2008; Bonnevie & Craig, 2018) and across taxa there is little consensus on terminology (but see Busnel, 1963). It is beyond the scope of this review to provide a comprehensive list of terminology or reconcile past inconsistencies.…”

Section: Approaches For Quantifying Animal Soundsmentioning

confidence: 99%

See 1 more Smart Citation

Comparative bioacoustics: a roadmap for quantifying and comparing animal sounds across diverse taxa

et al. 2021

View full text Add to dashboard Cite

Animals produce a wide array of sounds with highly variable acoustic structures. It is possible to understand the causes and consequences of this variation across taxa with phylogenetic comparative analyses. Acoustic and evolutionary analyses are rapidly increasing in sophistication such that choosing appropriate acoustic and evolutionary approaches is increasingly difficult. However, the correct choice of analysis can have profound effects on output and evolutionary inferences. Here, we identify and address some of the challenges for this growing field by providing a roadmap for quantifying and comparing sound in a phylogenetic context for researchers with a broad range of scientific backgrounds. Sound, as a continuous, multidimensional trait can be particularly challenging to measure because it can be hard to identify variables that can be compared across taxa and it is also no small feat to process and analyse the resulting high‐dimensional acoustic data using approaches that are appropriate for subsequent evolutionary analysis. Additionally, terminological inconsistencies and the role of learning in the development of acoustic traits need to be considered. Phylogenetic comparative analyses also have their own sets of caveats to consider. We provide a set of recommendations for delimiting acoustic signals into discrete, comparable acoustic units. We also present a three‐stage workflow for extracting relevant acoustic data, including options for multivariate analyses and dimensionality reduction that is compatible with phylogenetic comparative analysis. We then summarize available phylogenetic comparative approaches and how they have been used in comparative bioacoustics, and address the limitations of comparative analyses with behavioural data. Lastly, we recommend how to apply these methods to acoustic data across a range of study systems. In this way, we provide an integrated framework to aid in quantitative analysis of cross‐taxa variation in animal sounds for comparative phylogenetic analysis. In addition, we advocate the standardization of acoustic terminology across disciplines and taxa, adoption of automated methods for acoustic feature extraction, and establishment of strong data archival practices for acoustic recordings and data analyses. Combining such practices with our proposed workflow will greatly advance the reproducibility, biological interpretation, and longevity of comparative bioacoustic studies.

show abstract

Section: Approaches For Quantifying Animal Soundsmentioning

confidence: 94%

Section: Approaches For Quantifying Animal Soundsmentioning

confidence: 99%

Comparative bioacoustics: a roadmap for quantifying and comparing animal sounds across diverse taxa

et al. 2021

View full text Add to dashboard Cite

show abstract

“…On a few occasions, due to the rough terrain, birds could not be seen so their location was estimated based on signal strength and triangulation (Kenward ). For each sighting of a bird (with binoculars), we noted the time of day, color bands, location (taken with a Garmin Portable GPS Receiver; nominal error ~ 3 m), habitat type, and, if singing, the type of song (sensu Bonnevie and Craig ) being uttered. We recorded some songs using a recorder (FR‐2LE, Fostex, Tokyo, Japan) and microphone (ME‐66, Sennheiser, Wedemark, Germany).…”

Section: Methodsmentioning

confidence: 99%

Home‐ranges, population densities, vocal behavior, and post‐fledging movements of Cipo Canasteros ( Asthenes luizae , Furnariidae), a rock‐specialist endemic of the highlands of eastern Brazil

2019

View full text Add to dashboard Cite

Cipo Canasteros (Asthenes luizae, Furnariidae) have a fragmented and limited range restricted to the campos rupestres (rupestrian grasslands) habitat in the Brazilian highlands of the Espinhac ßo Range, and little is known about their behavior, ecology, and population biology. From March 2009 to November 2010, we monitored birds (24 banded and 22 radio-tracked) at two study sites at Serra do Cip o in the state of Minas Gerais, Brazil, to estimate their home-range sizes and population density, and describe their habitat use, natal dispersal behavior, and vocal behavior. We found an average density of 8.7 paired adults/ km² in our study areas or 22.9 paired adults/km 2 when considering only used habitats. The sex ratio was male-biased (males/total adults = 0.68), adults exhibited high site fidelity, home-ranges averaged 4.0 ha (fixed kernel 95%) or 3.5 ha (95% minimum convex polygon) in size, and both sexes defended territories yearround. We recorded four main types of songs, including two uttered more often during the breeding season. We monitored the natal dispersal of two males and one female who moved maximum distances of 1238 m, 780 m, and 1056 m, respectively, from natal areas. Our results confirm that Cipo Canasteros are restricted to the rocky-outcrop habitat of the campos rupestres. In part due to their habitat specialization, Cipo Canasteros are considered Near Threatened, but other factors contributing to their demographic fragility include the small number, and probably low survival, of females and low reproductive success due to predation and brood parasitism by cowbirds. Given these threats, along with their specialized habitat and restricted range, the future conservation of Cipo Canasteros will likely depend on the extent to which their campos rupestres habitat can be conserved. RESUMEN.Rango de hogar, densidad poblacional, comportamiento vocal y movimientos posteriores a la salida del nido en Asthenes luizae (Furnariidae), un especialista de rocas end emico de las tierras altas de BrasilAsthenes luizae (Furnariidae) tienen una distribuci on fragmentada y restringida al h abitat de campos rupestres de las tierras altas de la cordillera de Espinhac ßo. Se conoce poco sobre su comportamiento, ecolog ıa y biolog ıa poblacional. Desde Marzo de 2009, hasta Noviembre de 2010, monitoreamos aves (24 con anillos y 22 con radio transmisores) en dos sitios de estudio en Serra do Cip o en el estado de Minas Gerais, Brasil, con el fin de estimar el tamaño de sus rangos de hogar, la densidad poblacional y describir el uso de h abitat, comportamientos de dispersi on y comportamiento vocal. Encontramos una densidad promedio de 8.7 parejas de adultos/km 2 en nuestros sitios de estudio o 22.9 parejas de adultos/km 2 cuando consideramos solo los h abitat utilizados. La raz on sexual estuvo sesgada hacia los machos (machos/adultos totales = 0.68), los adultos tuvieron alta fidelidad de sitio, los rangos de hogar promediaron 4.0 ha (kernel fijado en 95%) o 3.5 ha (95% pol ıgono m ınimo convexo) en tamaño y ambos sexos d...

show abstract