Experimental evidence of slight alteration of male Collared Flycatcher songs based on the female audience

Ibis, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Bird song is an important and variable sexual signal in many passerine species. One function of this variability may be that males show mate choice can alter their according to the quality female which they are singing. If attractive songs costly, we hypothesize sing more attractively or invest singing when trying attract a better‐quality partner. We tested hypothesis with field experiment wild population Collared Flycatchers Ficedula albicollis . presented stimuli differing amount plumage ornamentation on territory then recorded song. repeated at least twice for each individual different stimuli. obtained 67 recordings from 29 males, 10–50 responses. Five traits (song length, mean frequency, frequency bandwidth, tempo complexity) extracted were used further analyses examining whether identity focal male explain variance traits, change exposed females. While among‐individual was considerable all investigated explained only complexity tempo. This indicates these if could not clearly identify difference response driven by either levels. Overall, our results reveal individuality plasticity, suggest exist

Language: Английский

---

Close Males Sing With Dissimilar Minimum Frequency and Repertoire Size in a Wild Passerine

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)

Published: April 1, 2025

ABSTRACT The position occupied in social networks influences the success of individuals many animal species. However, associations between bird song (an important means communication) and relative remained understudied. Such are expected because neighbors can learn elements from each other or change their songs due to competition, also be related individual traits determining network positions. We investigated these phenomena males collared flycatcher ( Ficedula albicollis ), a passerine with complex intense territorial interactions. Relying on 19 years recordings, we used multiple reflecting spectral temporal characteristics complexity songs, as well syllable composition, investigate if similarity is associated neighbor networks. examined whether birds settle down an age‐dependent manner (as age linked quality) nonrandom spatial distribution affected by proportion immigrants, young birds, number displaying males. found that minimum frequency repertoire size differed, but this pattern was not shaped predictors. Therefore, our results highlight need study communication environment together. fact neighboring tend sing differently respect some suggests flexibly adjusted based performance conspecifics.

Language: Английский

---

Are commonly used metrics of bird song complexity concordant?

Ornithology, Journal Year: 2019, Volume and Issue: 136(1)

Published: Jan. 1, 2019

Abstract Researchers studying the evolution of animal communication often ask what generates and maintains signal complexity, but they define measure complexity in different ways. If metrics are not concordant, then studies using them probably comparable. In this study, we asked whether 7 bird song vary tandem among individuals a single species, Rock Wren (Salpinctes obsoletus). The included were chosen because regularly used by researchers field to test hypotheses within literature. Results indicated that none positively correlated with any others, suggesting songs under general selective pressures favoring increased across multiple features. correlated, care should be taken when designing analyses comparing results. always clearly “complexity” investigation verify it has significance study species. Contradictory outcomes existing research into may result from fact word is represent independent traits.

Language: Английский

---

Sequential organization of birdsong: relationships with individual quality and fitness

Behavioral Ecology, Journal Year: 2020, Volume and Issue: 32(1), P. 82 - 93

Published: Sept. 21, 2020

Abstract Many vocalizing animals produce the discrete elements of their acoustic signals in a specific sequential order, but we know little about biological relevance this ordering. For that, must characterize degree by which individuals differ how they organize sequentially and relate these differences to variation quality fitness. In study, fulfilled tasks male collared flycatchers (Ficedula albicollis). We characterized order syllables with network analysis approach studied consistency variables on distinct time scales (within day, between days, years), assessed relationship such indicators like age, body condition, arrival date, fitness related proxies survival next year pairing success. found that were associated nonrandomly one another both frequency consecutive number motif types higher original than randomized syllable sequences. Average small-worldness showed considerable among-individual decreasing repeatability increasing scale. Furthermore, relationships age average among within individuals. Accordingly, older males sequences using common less often younger However, no fitness-related variables. conclusion, organization birdsong has potential encode individual-specific characteristics, thus could be used as signal social interactions potentially subject sexual selection.

Language: Английский

---

The effect of social environment on bird song: listener-specific expression of a sexual signal

Behavioral Ecology, Journal Year: 2020, Volume and Issue: 32(3), P. 395 - 406

Published: Nov. 16, 2020

Animal signals should consistently differ among individuals to convey distinguishable information about the signalers. However, behavioral display signals, such as bird song are also loaded with considerable within-individual variance mostly unknown function. We hypothesized that immediate social environment may play a role in mediating component, and investigated collared flycatcher (

Language: Английский

---

“Ficedula”: an open-source MATLAB toolbox for cutting, segmenting and computer-aided clustering of bird song

Journal of Ornithology, Journal Year: 2018, Volume and Issue: 159(4), P. 1105 - 1111

Published: July 12, 2018

Language: Английский

---

Automatic bird song and syllable segmentation with an open-source deep-learning object detection method – a case study in the Collared Flycatcher (Ficedula albicollis)

Ornis Hungarica, Journal Year: 2019, Volume and Issue: 27(2), P. 59 - 66

Published: Dec. 1, 2019

Abstract The bioacoustic analyses of animal sounds result in an enormous amount digitized acoustic data, and we need effective automatic processing to extract the information content recordings. Our research focuses on song Collared Flycatcher (Ficedula albicollis) are interested evolution signals. During last 20 years, obtained hundreds hours recordings bird songs collected natural environment, there is a permanent for process In this study, chose open-source, deep-learning image detection system (1) find species-specific (2) detect small, discrete elements so-called syllables within song. For these tasks, first transformed data into spectrogram images, then trained two models separately our manually segmented database. resulted with intersection union higher than 0.8 0.7. This technique anticipates order magnitude less human effort manual method used before. Thanks new technique, able address biological questions that large data.

Language: Английский

---

A practical approach to measuring the acoustic diversity by community ecology methods

Methods in Ecology and Evolution, Journal Year: 2021, Volume and Issue: 12(5), P. 874 - 884

Published: Jan. 24, 2021

Abstract The study of the diversity animal signals on within‐ and among‐species levels is key to uncover mechanisms that shape evolution communication systems. However, methods used quantify acoustic (like repertoire size) lack grasp several aspects diversity. Here, we propose a new framework for communication, in which decompose with methodological toolbox from community ecology. We explore how different estimates reflecting can be applied characterise complexity signals. this approach wide range taxa derive further insights about function systems besides traditional methods. To illustrate use our case study, song collared flycatcher Ficedula albicollis as model system. Based three frequency time variables, calculated functional indices (FRic, FEve FDiv) distribution elements (syllables) parameter space. aimed interrelations indices, reveal degree among‐individual consistency investigate their relationships certain individual quality (body condition, age arrival date). found were largely independent each other showed patterns time‐scale dependent, indicating signalling potential individual‐specific attributes. also strongly related males. Our decomposing into components additional biologically meaningful birdsong.

Language: Английский

---

Effects of positive frequency-dependent learning, learning mistakes, and immigration on complex cultures–Validation on the song of collared flycatcher (Ficedula albicollis) by individual-based modeling

Frontiers in Ecology and Evolution, Journal Year: 2023, Volume and Issue: 11

Published: June 9, 2023

Cultural diversity and stability of a population affect the adaptiveness survival individuals. Besides field studies, cultural have been investigated with help different modeling approaches in relatively simple cultures. These theoretical studies helped identify mechanisms that generate through increasing proportion new elements population, for example by immigration or erroneous learning. Copy-the-majority learning strategies, forms positive frequency-dependent learning, rather opposite effect: while they maintaining favoring spread common elements, also decrease diversity. We whether these basic, conflicting are sufficient together to create complex, polymorphic system maintain its stability. For we developed an individual-based model simulating song birds which extent immigration, frequency mistakes strength were included as modifiable parameters. From model, obtained information on composition temporal changes individual repertoires. A comparison long-term data European passerine bird species moderate complexity, collared flycatcher ( Ficedula albicollis ), was performed. Our results confirmed certain combinations three indeed able patterns showed aspects Yet, several discrepancies occurred when comparing simulation emphasize implementation other mechanisms, especially those stabilizing effect. Long-term metastable states, found population-level diversity, raise awareness animal cultures’ possible sensitivity external factors.

Language: Английский

---

Acoustic metrics to assess humpback whale song unit structure from the Atlantic sector of the Southern ocean

The Journal of the Acoustical Society of America, Journal Year: 2021, Volume and Issue: 149(6), P. 4649 - 4658

Published: June 1, 2021

Acoustic metrics (AMs) aggregate the acoustic information of a complex signal into unique number, assisting our interpretation environments and providing rapid intuitive solution to analyze large passive datasets. Manual identification characterization intraspecific call trait variation has been largely used in variety sonic taxa. However, it is time consuming, relatively subjective, measurements can suffer from low replicability. This study assesses potential using combination standardized automatically computed AMs train supervised classification model, as an alternative discrimination protocols manual categorize humpback whale (Megaptera novaeangliae) song units Southern Ocean. Our random forest model successfully discriminated between 12 unit types (UT), achieving average accuracy 84%. UTs were further described discussed context hierarchical structure We show that accurate discriminant models based on relevant AM combinations provide interesting automated use for simple, rapid, highly reproducible comparison vocalization populations, with be applied both aquatic terrestrial contexts, other vocal species, over different scales.

Language: Английский

---