Individual and Sexual Differences in the Calls of the Monomorphic White-Faced Whistling Duck<i>Dendrocygna viduata</i>

Volodin, Ilya A.; Volodina, Elena V.; Klenova, Anna V.; Filatova, Olga A.

doi:10.3161/068.040.0110

Cited by 16 publications

(18 citation statements)

References 24 publications

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“…In all four species of whistling ducks, the non-overlapping values of call variables provided the possibility of error free sexing by a single loud whistle (Volodin et al 2009). As well as spontaneous vocal emission, playbacks of species-specific calls of whistling ducks evoked immediate vocal responses of loud whistles that revealed sex differences (Volodin et al 2005b).…”

Section: Order Anseriformesmentioning

confidence: 99%

Gender identification using acoustic analysis in birds without external sexual dimorphism

Volodin

Volodina²,

Klenova

et al. 2015

Avian Res

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Zoo and wildlife management faces a problem with bird sexing, as many bird taxa have indiscernible gender differences in size and coloration. Problematic groups are geese, cranes, rails, raptors, owls, parrots, doves, auks, shearwaters and some passerines. Commonly accepted invasive sexing techniques based on genetics, laparoscopy, morphometric and on cloacal inspection, are all needed in bird capturing and handling. Capturing and subsequent manipulations may be inapplicable for free-ranging birds, whereas distant voice-based sexing is relevant for many species. This review evaluates the potential for noninvasive sexing by separate calls or duet calls, for adult birds of 69 species from 16 orders and for chicks of 11 species from 7 orders. For adult birds of 25 species, a single call per individual was sufficient for 100 % reliable sexing by ear or using spectrographic analysis. For chicks, the potential for voice-based sexing seems to be very limited. For birds calling rarely or unpredictably, we propose a simple way of provoking vocalization using playbacks of species-specific calls that are available from sound libraries. We conclude that sexing by voice may represent a feasible alternative to the classical sexing techniques, both in the wild and in captivity.

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Section: Order Anseriformesmentioning

confidence: 99%

Gender identification using acoustic analysis in birds without external sexual dimorphism

Volodin

Volodina²,

Klenova

et al. 2015

Avian Res

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“…Another intriguing problem is which acoustic parameters could be responsible for the finer details of the information content of dog barks. Based on the vast literature of vocalization-based sex and individual recognition in other species, e.g., African wild dog, Lycaon pictus (Hartwig 2005); white-faced whistling duck, Dendrocygna viduata (Volodin et al 2005); or Wied's black-tufted-ear marmosets, Callithrix kuhlii (Smith et al 2009), one might expect dog barks to also carry specific cues of the caller's individual features, such as sex and age, for example. There are, however, considerable obstacles in testing such subtle pieces of information using classical techniques (i.e., playback).…”

Section: Introductionmentioning

confidence: 99%

Comparing supervised learning methods for classifying sex, age, context and individual Mudi dogs from barking

et al. 2014

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Barking is perhaps the most characteristic form of vocalization in dogs; however, very little is known about its role in the intraspecific communication of this species. Besides the obvious need for ethological research, both in the field and in the laboratory, the possible information content of barks can also be explored by computerized acoustic analyses. This study compares four different supervised learning methods (naive Bayes, classification trees, k-nearest neighbors and logistic regression) combined with three strategies for selecting variables (all variables, filter and wrapper feature subset selections) to classify Mudi dogs by sex, age, context and individual from their barks. The classification accuracy of the models obtained was estimated by means of K-fold cross-validation. Percentages of correct classifications were 85.13 % for determining sex, 80.25 % for predicting age (recodified as young, adult and old), 55.50 % for classifying contexts (seven situations) and 67.63 % for recognizing individuals (8 dogs), so the results are encouraging. The best-performing method was k-nearest neighbors following a A. Larranaga Student at the Universidad Alfonso X El Sabio, Av. Universidad, 1, 28691 Villanueva de la Canada, Madrid, Spain wrapper feature selection approach. The results for classifying contexts and recognizing individual dogs were better with this method than they were for other approaches reported in the specialized literature. This is the first time that the sex and age of domestic dogs have been predicted with the help of sound analysis. This study shows that dog barks carry ample information regarding the caller's indexical features. Our computerized analysis provides indirect proof that barks may serve as an important source of information for dogs as well.

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“…Different from mammals, whose sexual recognition is mostly by olfactory stimuli, birds detect sex and identity of conspecifics regularly by visual and acoustical performances. In most species, male calls are lower in frequency than female calls (VOLODIN et al, 2005). For this reason, using the parameter F1 or F2 could be useful in differ the sex, as it was found in the present study.…”

Section: Resultsmentioning

confidence: 67%

“…It might identify unusual traits related to animals' status (MANTEUFFEL & SCHÖN, 2004;CORDEIRO et al, 2009;GRANDIN, 2010;CHAN et al, 2011). Other studies show vocal signals as a prominent tool to identify the animals' sex (FISCHER et al, 2004;VOLODIN et al, 2005;VANNONI & MCELLIGOTT, 2008). Broiler sexing is a time-consuming task.…”

Section: Introductionmentioning

confidence: 99%

“…Broiler sexing is a time-consuming task. It might be done using DNA methods or the visual observation of physical characteristics, such as the cloaca or feathering appearance (VOLODIN et al, 2005;CERIT & AVANUS, 2007;VOLODIN et al, 2009). Current literature presents a positive correlation between frequency o f vocalization and dominance of males, indicating the possibility of identifying the males by the vocalization features (VANNONI & MCELLIGOTT, 2008;FISCHER et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Vocalization of broilers can be used to identify their sex and genetic strain

2015

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ABSTRACT:In order to reach higher broiler performance, farmers target losses reduction. One way to make this possible is by rearing sexed broilers as male and female present diverse performance due to their physiological differences. Birds from different genetic strain also have a distinct performance at the same age. Considering that sexed flocks may present higher performance this study aimed to identify one-day-old chicks' sex throughout their vocalization. This research also investigated the possibility of identifying the genetic strain by their vocalization attributes. A total of 120 chicks, half of them were from Cobb ® genetic strain and the other half from Ross ® genetic strain. From each group, a total of 30 were males and 30 females, which were previously separated by sex using their secondary physiological characteristics at the hatchery. Vocalizations audio recording was done inside a semi-anechoic chamber using a unidirectional microphone connected to an audio input of a digital recorder. Vocalizations were recorded for two minutes. Acoustic characteristics of the sounds were analyzed being calculated the fundamental frequency Pitch, the sound intensity, the first formant, and second formant. Results indicated that the vocalizations of both sexes could be identified by the second formant, and the genetic strain was detected by both the second formant and the Pitch.KEYWORDS: signal analysis, sex identification, bioacoustics. VOCALIZAÇÃO DE FRANGOS DE CORTE PODE SER USADA PARA IDENTIFICAR O SEXO E A LINHAGEM GENÉTICARESUMO: Com a finalidade de atingir maior desempenho em frangos de corte, produtores almejam redução de perdas. Uma das maneiras de se tornar isto possível é alojar lotes sexados, uma vez que machos e fêmeas apresentam desempenho distinto devido às diferenças fisiológicas. Aves de linhagens genéticas diferentes também apresentam desempenho distinto na mesma idade. Considerando que lotes sexados podem apresentar maior desempenho, este estudo objetivou identificar o sexo de pintos de um dia de idade através de sua vocalização. Esta pesquisa também investigou a possibilidade de identificar a linhagem genética através dos atributos da vocalização. O total de 120 pintos, sendo metade da genética Cobb ® e a outra metade da genética Ross ® , foram utilizados. De cada grupo, o total de 30 machos e 30 fêmeas foi previamente separado, utilizando suas características fisiológicas secundárias, no incubatório. O registro áudio de vocalização foi efetuado dentro de uma câmara semi anecoica, usando um microfone unidirecional conectado a uma entrada de áudio em um gravador digital. As vocalizações foram gravadas por dois minutos. As características acústicas dos sons foram analisadas e foram calculadas a frequência fundamental Pitch, a intensidade do som, a primeira formante e a segunda formante. Os resultados indicaram que a vocalização de ambos os sexos pode ser identificada pela segunda formante, e a linhagem genética pela segunda formante e pela frequência de Pitch. PALAVRAS-CHAVE:análise de sinais, i...

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Individual and Sexual Differences in the Calls of the Monomorphic White-Faced Whistling DuckDendrocygna viduata

Cited by 16 publications

References 24 publications

Gender identification using acoustic analysis in birds without external sexual dimorphism

Gender identification using acoustic analysis in birds without external sexual dimorphism

Comparing supervised learning methods for classifying sex, age, context and individual Mudi dogs from barking

Vocalization of broilers can be used to identify their sex and genetic strain

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