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View article: Absence of a dear enemy effect and limited evidence of neighbour-stranger vocal discrimination in Ecstatic Display Songs of nesting African penguins
Absence of a dear enemy effect and limited evidence of neighbour-stranger vocal discrimination in Ecstatic Display Songs of nesting African penguins Open
African penguins ( Spheniscus demersus ), a critically endangered seabird, form dense breeding colonies where nesting individuals maintain territories advertised through a loud vocalisation, the Ecstatic Display Song (EDS). This song encod…
View article: Comparative Analysis of the Whistles of Three Oceanic Dolphins in the Comoros
Comparative Analysis of the Whistles of Three Oceanic Dolphins in the Comoros Open
The Shisiwani National Park (Anjouan, Comoros) is a cetacean biodiversity hotspot. However, the vocal behavior of marine mammals inhabiting the area has never been studied. In 2023, we conducted a 400‐nautical‐mile survey from a 5‐m motorb…
View article: Accelerando and crescendo in African penguin ecstatic display songs
Accelerando and crescendo in African penguin ecstatic display songs Open
Many species produce rhythmic sound sequences. Some purportedly speed up their vocalizations throughout a display, reminiscent of—but not necessarily equivalent to— accelerando in human music. This phenomenon has been frequently reported b…
View article: An evolutionary model of rhythmic accelerando in animal vocal signalling
An evolutionary model of rhythmic accelerando in animal vocal signalling Open
Animal acoustic communication contains many structural features. Among these, temporal structure, or rhythmicity, is increasingly tested empirically and modelled quantitatively. Accelerando is a rhythmic structure which consists of tempora…
View article: Accelerando and crescendo in African penguin display songs
Accelerando and crescendo in African penguin display songs Open
Many species produce rhythmic sound sequences. Some purportedly speed up their vocalizations throughout a display, reminiscent of—but not necessarily equivalent to— “accelerando” in human music. This phenomenon has been frequently reported…
View article: A Wave Glider for Passive Acoustic Monitoring of Cetaceans and Anthropogenic Sounds in the Central Mediterranean Sea
A Wave Glider for Passive Acoustic Monitoring of Cetaceans and Anthropogenic Sounds in the Central Mediterranean Sea Open
Passive Acoustic Monitoring (PAM) has become a widely used method to study cetaceans, especially for populations facing escalating threats from noisy human activities, including shipping traffic, fishing industry and marine constructions. …
View article: Smiling underwater: Exploring playful signals and rapid mimicry in bottlenose dolphins
Smiling underwater: Exploring playful signals and rapid mimicry in bottlenose dolphins Open
Play is a widespread behavior present in phylogenetically distant taxa that, in its social form, relies on complex communication. Playful communication has been largely neglected in marine mammals. We focus on playful visual communication …
View article: "Get on board with researchers": Life Conceptu Maris marine citizen science campaign
"Get on board with researchers": Life Conceptu Maris marine citizen science campaign Open
The manuscript provides an overview of the mid-term results of the citizen science campaign activities conducted within the Life CONCEPTU MARIS project (LIFE20 NAT/IT/001371) whose aim is to improve the conservation status of cetaceans and…
View article: Acoustic cues to development of African Penguins (<i>Spheniscus demersus</i>) begging calls
Acoustic cues to development of African Penguins (<i>Spheniscus demersus</i>) begging calls Open
Avian begging calls mediate parent–offspring conflict and direct parental care to genetically related progeny. We found that the fundamental frequency of begging calls of African Penguins Spheniscus demersus decreases as the penguins age a…
View article: Windy events detection in big bioacoustics datasets using a pre-trained Convolutional Neural Network
Windy events detection in big bioacoustics datasets using a pre-trained Convolutional Neural Network Open
Passive Acoustic Monitoring (PAM), which involves using autonomous record units for studying wildlife behaviour and distribution, often requires handling big acoustic datasets collected over extended periods. While these data offer invalua…
View article: Bottlenose dolphins (Tursiops truncatus) display gaze alternation and referential communication in an impossible task
Bottlenose dolphins (Tursiops truncatus) display gaze alternation and referential communication in an impossible task Open
Gaze cues play a vital role in conveying critical information about objects and locations necessary for survival, such as food sources, predators, and the attentional states of conspecific and heterospecific individuals. During referential…
View article: Network social dynamics of an ex-situ colony of African penguins following the introduction of unknown conspecifics
Network social dynamics of an ex-situ colony of African penguins following the introduction of unknown conspecifics Open
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View article: African penguins utilize their ventral dot patterns for individual recognition
African penguins utilize their ventral dot patterns for individual recognition Open
Birds are known to be highly social and visual animals. Yet no specific visual feature has been identified to be responsible for individual recognition in birds. Here, using a differential looking paradigm across five experiments, we demon…
View article: Vocal tract shape variation contributes to individual vocal identity in African penguins
Vocal tract shape variation contributes to individual vocal identity in African penguins Open
Variation in formant frequencies has been shown to affect social interactions and sexual competition in a range of avian species. Yet, the anatomical bases of this variation are poorly understood. Here, we investigated the morphological co…
View article: Effect of Environmental Variables on African Penguin Vocal Activity: Implications for Acoustic Censusing
Effect of Environmental Variables on African Penguin Vocal Activity: Implications for Acoustic Censusing Open
Global biodiversity is in rapid decline, and many seabird species have disproportionally poorer conservation statuses than terrestrial birds. A good understanding of population dynamics is necessary for successful conservation efforts, mak…
View article: Penguins perceive variations of source- and filter-related vocal parameters of species-specific vocalisations
Penguins perceive variations of source- and filter-related vocal parameters of species-specific vocalisations Open
View article: Isochronous singing in 3 crested gibbon species (<i>Nomascus</i> spp.)
Isochronous singing in 3 crested gibbon species (<i>Nomascus</i> spp.) Open
The search for common characteristics between the musical abilities of humans and other animal species is still taking its first steps. One of the most promising aspects from a comparative point of view is the analysis of rhythmic componen…
View article: Favaro_Zanoli_Dataset
Favaro_Zanoli_Dataset Open
Raw data used for the statistical analyses presented in the article "Anatomical unconstrained regions of the vocal tract determine acoustical correlates of individual identity in African penguins"
View article: Favaro_Zanoli_Dataset
Favaro_Zanoli_Dataset Open
Raw data used for the statistical analyses presented in the article "Anatomical unconstrained regions of the vocal tract determine acoustical correlates of individual identity in African penguins"
View article: Isochrony and rhythmic interaction in ape duetting
Isochrony and rhythmic interaction in ape duetting Open
How did rhythm originate in humans, and other species? One cross-cultural universal, frequently found in human music, is isochrony: when note onsets repeat regularly like the ticking of a clock. Another universal consists in synchrony (e.g…
View article: Episodic-like memory in common bottlenose dolphins
Episodic-like memory in common bottlenose dolphins Open
Episodic memory involves the conscious recollection of personally experienced events, which has often been argued to be a uniquely human ability.1-5 However, evidence for conscious episodic recall in humans is centered around language-base…
View article: Vocal accommodation in penguins ( <i>Spheniscus demersus</i> ) as a result of social environment
Vocal accommodation in penguins ( <i>Spheniscus demersus</i> ) as a result of social environment Open
The ability to vary the characteristics of one's voice is a critical feature of human communication. Understanding whether and how animals change their calls will provide insights into the evolution of language. We asked to what extent the…
View article: Vocal Behaviour of a Bottlenose Dolphin Pod during a Deadly Bycatch Event in the Gulf of Catania, Ionian Sea
Vocal Behaviour of a Bottlenose Dolphin Pod during a Deadly Bycatch Event in the Gulf of Catania, Ionian Sea Open
Cetacean bycatch is increasing worldwide and poses a threat to the conservation of several delphinids. The bottlenose dolphin (Tursiops truncatus) is frequently involved in bycatch incidents, due to its coastal distribution and opportunist…
View article: Polycyclic Aromatic Hydrocarbons and Polychlorinated Biphenyls in Seawater, Sediment and Biota of Neritic Ecosystems: Occurrence and Partition Study in Southern Ligurian Sea
Polycyclic Aromatic Hydrocarbons and Polychlorinated Biphenyls in Seawater, Sediment and Biota of Neritic Ecosystems: Occurrence and Partition Study in Southern Ligurian Sea Open
The Mediterranean Sea is subjected to a high anthropic pressure, which determines direct or indirect discharges of persistent organic pollutants deriving from intensive industrial activities. These compounds could easily enter and contamin…
View article: Rhythmic categories across primate vocal displays
Rhythmic categories across primate vocal displays Open
The last few years have revealed that several species may share the building blocks of Musicality with humans.The recognition of these building blocks (e.g., rhythm, frequency variation) was a necessary impetus for a new round of studies i…
View article: Les lois linguistiques de la brièveté : conformité chez le lémurien chanteur Indri indri
Les lois linguistiques de la brièveté : conformité chez le lémurien chanteur Indri indri Open
Vocal and gestural sequences of many primate species conform to two principles of compression: the compensation between the length of a construct and that of its constituents (Menzerath-Altmann law) and an inverse relationship between sign…
View article: Cross-modal individual recognition in the African penguin and the effect of partnership
Cross-modal individual recognition in the African penguin and the effect of partnership Open
An animal's ability to recognize another individual by matching their image to their voice suggests they form internal representations of other individuals. To what extent this ability, termed cross-modal individual recognition, extends to…
View article: Passive acoustic monitoring of the endangered African Penguin (<i>Spheniscus demersus</i>) using autonomous recording units and ecoacoustic indices
Passive acoustic monitoring of the endangered African Penguin (<i>Spheniscus demersus</i>) using autonomous recording units and ecoacoustic indices Open
African Penguins Spheniscus demersus are endangered and declining seabirds which make extensive use of vocal signals for intra‐specific vocal communication. Accordingly, passive acoustic monitoring tools could be developed as robust popula…
View article: Linguistic laws of brevity: conformity in Indri indri
Linguistic laws of brevity: conformity in Indri indri Open
View article: Raw data associated with the manuscipt from Cross-modal individual recognition in the African penguin and the effect of partnership
Raw data associated with the manuscipt from Cross-modal individual recognition in the African penguin and the effect of partnership Open
Page 1 Pictionary of name variables; Page 2 raw data for the response latency and duration of the first and second look; Page 3 raw data of the total duration and frequency of looking.