Journal ArticleDOI
The role of body size, phylogeny, and ambient noise in the evolution of bird song
TLDR
There has been an evolutionary response to selection for low-frequency songs by birds in low-forest habitats, according to the constraints of body size and evolutionary history, and the spectral distribution of ambient noise as an additional selective factor is examined.Abstract:
Morton found that the average emphasized frequency in the songs of tropical bird species in low-forest habitats was lower than that of species in grassland or edge habitats. He suggested that this was due to a frequency window around 1585-2500 Hz in low-forest habitats, and that there was selection to produce songs with frequencies in this window in order to increase the transmission distance of the songs. In the present study, we analyze the constraints of body size and evolutionary history on the ability of avian species to respond to this selection. Also, we examine the spectral distribution of ambient noise as an additional selective factor. There is a correlation between body size and the emphasized frequency of the song for the species analyzed by Morton. Larger birds produce songs with lower emphasized frequencies. Morton's demonstration that birds in the low forest produce songs with lower frequencies is confounded by the fact that larger birds also live in this habitat. Phylogeny is also a potent...read more
Citations
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Journal ArticleDOI
Signals, signal conditions, and the direction of evolution
TL;DR: Sensory systems, signals, signaling behavior, and habitat choice are evolutionarily coupled and should coevolve in predictable directions, determined by environmental biophysics, neurobiology, and the genetics of the suites of traits.
Book ChapterDOI
Acoustic Communication in Noise
Henrik Brumm,Hans Slabbekoorn +1 more
TL;DR: This chapter reviews recent advancements in studies of vocal adaptations to interference by background noise and relates these to fundamental issues in sound perception in animals and humans.
Journal ArticleDOI
Soundscape Ecology: The Science of Sound in the Landscape
Bryan C. Pijanowski,Luis J. Villanueva-Rivera,Sarah L. Dumyahn,Almo Farina,Bernie Krause,Brian M. Napoletano,Stuart H. Gage,Nadia Pieretti +7 more
TL;DR: This article presents a unifying theory of soundscape ecology, which brings the idea of the soundscape—the collection of sounds that emanate from landscapes—into a research and application focus and proposes a research agenda that includes six areas.
Journal ArticleDOI
Correlated evolution of morphology and vocal signal structure in Darwin's finches
TL;DR: It is shown, in Darwin's finches of the Galápagos Islands, that diversification of beak morphology and body size has shaped patterns of vocal signal evolution, such that birds with large beaks and body sizes have evolved songs with comparatively low rates of syllable repetition and narrow frequency bandwidths.
Journal ArticleDOI
The honesty of bird song: multiple constraints for multiple traits
Diego Gil,Manfred Gahr +1 more
TL;DR: A review of the existing evidence for each of the constraints on the evolution of sexually selected male signals, revealing some major gaps in knowledge of this fascinating biological system.
References
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Nonparametric statistics for the behavioral sciences
TL;DR: This is the revision of the classic text in the field, adding two new chapters and thoroughly updating all others as discussed by the authors, and the original structure is retained, and the book continues to serve as a combined text/reference.
Biometery: The principles and practice of statistics in biological research
TL;DR: In this paper, the authors present a model for the analysis of variance in a single-classification and two-way and multiway analysis of Variance with the assumption of correlation.
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Biometry: The Principles and Practice of Statistics in Biological Research
Robert R. Sokal,F. James Rohlf +1 more
TL;DR: In this paper, the authors present a model for the analysis of variance in a single-classification and two-way and multiway analysis of Variance with the assumption of correlation.
The spandrels of San Marco and the Panglossian paradigm: a critique of the adaptationist programme
TL;DR: The adaptationist programme is faulted for its failure to distinguish current utility from reasons for origin, and Darwin’s own pluralistic approach to identifying the agents of evolutionary change is supported.