The low-frequency acoustic structure of mobbing calls differs across habitat types in three passerine families

  title={The low-frequency acoustic structure of mobbing calls differs across habitat types in three passerine families},
  author={Alexis C. Billings},
  journal={Animal Behaviour},

Low frequencies in the display vocalization of the Western Capercaillie (Tetrao urogallus)

This work analyzed the display vocalizations of Western Capercaillie males kept in breeding centers and identified harmonically structured signals with a fundamental frequency of 28.7 ± 1.2 Hz that temporally overlap with the Whetting phase and contribute to the distinct vocal expression between individuals.

Acoustic preadaptation to transmit vocal individuality of savanna nightjars in noisy urban environments

Noise-unrelated acoustic features may be one of the key preadaptations for this nocturnal nonpasserine to thrive so successfully in its newly adopted urban environment.

Increased attenuation and reverberation are associated with lower maximum frequencies and narrow bandwidth of bird songs in cities

As urbanization expands globally, the communication systems of an increasing number of species are affected. Because bird song is a long-distance signal used to attract mates and defend territories,

Experimentally broadcast ocean surf and river noise alters birdsong

Anthropogenic noise and its effects on acoustic communication have received considerable attention in recent decades. Yet, the natural acoustic environment’s influence on communication and its role

Nestling European Starlings (Sturnus vulgaris) adjust their begging calls in noise

ABSTRACT Anthropogenic noise, so common in cities, continues to increase with urbanisation. It adversely affects avian species that rely on acoustic forms of communication. The negative impacts are

Black-capped chickadees (Poecile atricapillus) alter alarm call duration and peak frequency in response to traffic noise

The results add to the small, but growing, literature documenting the effects of anthropogenic noise on avian alarm calls, demonstrate the flexibility and complexity of chickadee calls given in response to predators, and may partially explain why chickadees adapt well to urban areas.

Acoustic and postural displays in a miniature and transparent teleost fish, Danionella dracula

These studies firmly establish D. dracula as a sound-producing species that modulates both acoustic and postural displays during aggressive interactions based on either residency or body size, providing a foundation for further investigating the role of multimodal displays in a new model clade for neurogenomic studies of aggression, courtship, and other social interactions.

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

This work identifies and addresses 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, and presents a three-stage workflow for extracting relevant acoustic data.

A preliminary comparison of a songbird’s song repertoire size and other song measures between an urban and a rural site

Abstract Characteristics of birdsong, especially minimum frequency, have been shown to vary for some species between urban and rural populations and along urban–rural gradients. However, few



Habitat structure and the evolution of bird song: a meta-analysis of the evidence for the acoustic adaptation hypothesis

The meta-analysis supports the acoustic adaptation hypothesis, but habitat structure only weakly predicts the acoustical properties of bird songs, and other potentially relevant factors should be included in realistic models of the evolution of bird song acoustics.

Are bird species that vocalize at higher frequencies preadapted to inhabit noisy urban areas

It is found that species occurring in urban environments generally vocalize at higher dominant frequency than strictly nonurban congeneric species, without differing in body size or in the vegetation density of their natural habitats.

Ecological Sources of Selection on Avian Sounds

This study describes selection derived from habitat acoustics on the physical structure of avian sounds. Sound propagation tests were made in forest, edge, and grassland habitats in Panama to

The energetic basis of acoustic communication

  • J. GilloolyA. Ophir
  • Biology, Physics
    Proceedings of the Royal Society B: Biological Sciences
  • 2010
A theory of acoustic communication is presented that shows that much of the heterogeneity in animal vocal signals can be explained based on the energetic constraints of sound production, and quantitative predictions on key features of acoustic signals, including the frequency, power and duration of signals are yielded.

The effect of habitat and body size on the evolution of vocal displays in Thraupidae (tanagers), the largest family of songbirds

It is found that body size affects tanager vocalizations, such that nine out of ten song characters and scores from two principal component axes were correlated with mass, and larger tanagers tended to produce slower-paced, lower-pitched vocal displays within narrower bandwidths.

The Role of Body Size, Phylogeny, and Ambient Noise in the Evolution of Bird Song

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.

A comparative analysis of distress call structure in Australian passerine and non-passerine species : influence of size and phylogeny

The finding that distress calls from a range of Australian species have similar physical characteristics that appear to be convergent fits well with Marler's (1955, 1957) classic analyses of mobbing and aerial alarm calls in a variety of European passerines.

Shifting song frequencies in response to anthropogenic noise: a meta-analysis on birds and anurans

The relative importance of biological and contextual factors predisposing species to shift their singing/calling frequencies in response to anthropogenic noise is investigated, revealing broader shifts in smaller bird species when compared with bigger species.

Acoustic transmission of the chick-a-dee call of the Black-capped Chickadee (Poecile atricapillus): forest structure and note function.

The results suggest that the chick-a-dee call conforms to the acoustic adaptation hypothesis, and that the forms of its note types are in line with their function.