Animal CognitionPub Date : 2026-05-05DOI: 10.1007/s10071-026-02067-z
Ming-Ray Liao, Ria Patel, Elizabeth J Connor, Maria Ulloa Yoshikawa, Katelyn N Steakley, Orianis A Moore, Jessica L Yorzinski
{"title":"Numerical competence in peafowl: small quantity discrimination.","authors":"Ming-Ray Liao, Ria Patel, Elizabeth J Connor, Maria Ulloa Yoshikawa, Katelyn N Steakley, Orianis A Moore, Jessica L Yorzinski","doi":"10.1007/s10071-026-02067-z","DOIUrl":"https://doi.org/10.1007/s10071-026-02067-z","url":null,"abstract":"<p><p>The ability to discriminate numbers is widespread across taxonomically diverse animals. Some animals may have evolved enhanced numerical abilities to cope with specific social or ecological challenges. Peafowl (Pavo cristatus) are one example in which enhanced numerical abilities could be useful because peacocks have colorful trains that exhibit many eyespot feathers and females may evaluate the number of eyespot feathers to assess their mates. We therefore tested the numerical discrimination abilities of captive peafowl using a custom touchscreen apparatus. Peafowl were presented with two squares that contained a different number of circles (one to eight) and they received a reward for pecking on the square that contained more circles. To examine whether quantity factors aside from numerosity were influencing their performance, we varied the size, density or surface area of the circles. We found that the peafowl's performance was largely driven by numerosity rather than the other quantity factors. The peafowl generally performed at levels above chance regardless of the size, density or surface area of the circles. Their performance was also consistent with the Weber-Fechner Law, in which numerical discrimination is related to the ratio between numbers rather than the absolute difference. The results suggest that peafowl can discriminate among numbers and they could potentially use that ability during courtship or other contexts.</p>","PeriodicalId":7879,"journal":{"name":"Animal Cognition","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147832766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Animal CognitionPub Date : 2026-04-18DOI: 10.1007/s10071-026-02065-1
Laura Segura-Hernández, Kenna D S Lehmann, John Perez, Daniel D Wiegmann, Verner P Bingman, Eileen A Hebets
{"title":"Olfactory learning in two Amblypygi species Paraphrynus laevifrons and Phrynus pseudoparvulus.","authors":"Laura Segura-Hernández, Kenna D S Lehmann, John Perez, Daniel D Wiegmann, Verner P Bingman, Eileen A Hebets","doi":"10.1007/s10071-026-02065-1","DOIUrl":"https://doi.org/10.1007/s10071-026-02065-1","url":null,"abstract":"","PeriodicalId":7879,"journal":{"name":"Animal Cognition","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147715537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Animal CognitionPub Date : 2026-04-15DOI: 10.1007/s10071-026-02051-7
Claudia A. F. Wascher, Valérie Dufour
{"title":"Editorial: vocal communication in corvids","authors":"Claudia A. F. Wascher, Valérie Dufour","doi":"10.1007/s10071-026-02051-7","DOIUrl":"10.1007/s10071-026-02051-7","url":null,"abstract":"<div>\u0000 \u0000 <p>Corvids are one of the most prominent avian taxa for the study of animal behaviour and cognition, yet their vocal communication remains comparatively understudied. This special collection synthesizes current research on the ontogeny, mechanisms, functions, and evolutionary trajectories of corvid vocal systems through the lens of Tinbergen’s four questions. Contributions highlight early emergence of vocal individuality and socio-contextual plasticity in vocal behaviour across development. Corvid vocal sequences often conform to linguistic laws like Menzerath’s law, while also exhibiting context-sensitive modulation. Experimental work demonstrates advanced vocal flexibility and cognitive control: rooks can learn human verbal commands by attending primarily to auditory cues, and perceive rhythmic variations and flexibly adjust vocal timing in response to tempo and metrical changes, even without full entrainment, positioning corvids as promising models for exploring the evolutionary roots of rhythm and musicality. Field-based experiments show that female jackdaws recognize mates’ contact calls under natural conditions, supporting social coordination and pair-bond stability. Phylogenetic analyses demonstrate how ecological pressures and social complexity shape acoustic structure across the <i>Corvidae</i> family, while novel biologging and machine-learning approaches promise to overcome methodological challenges in studying vocal communication in corvids. Together, these findings position corvids as a powerful model for exploring the evolution of communication systems and their cognitive underpinnings.</p>\u0000 </div>","PeriodicalId":7879,"journal":{"name":"Animal Cognition","volume":"29 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13083436/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147687786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Animal CognitionPub Date : 2026-04-13Epub Date: 2026-04-15DOI: 10.1007/s10071-026-02064-2
Zoë Goverts, Maëlan Tomasek, Alex Jordan
{"title":"Comparative spatial cognition in wild Tanganyikan cichlids: navigation performance varies with home range and shelter availability","authors":"Zoë Goverts, Maëlan Tomasek, Alex Jordan","doi":"10.1007/s10071-026-02064-2","DOIUrl":"10.1007/s10071-026-02064-2","url":null,"abstract":"<div>\u0000 \u0000 <p>Spatial cognition varies widely even among closely related species, and identifying the ecological drivers of this variation remains challenging because species typically differ in multiple aspects of their ecology simultaneously. Here we performed wild experiments to compare spatial navigation in seven related species of shell-dwelling cichlids from Lake Tanganyika that share fundamental aspects of their ecology but vary in home range size and shelter availability. We displaced territorial males at successively greater distances (30 cm to 15 m) from shelters, using video tracking and automated 3D terrain reconstruction to measure return paths and homing success. We complemented this with onshore experiments examining landmark use and memory for shell locations. Of the seven species tested, three (<i>Lamprologus ornatipinnis</i>,<i> L. ocellatus</i>,<i> Neolamprologus meeli</i>) reliably returned to their home shells while four species (<i>N. multifasciatus</i>,<i> N. brevis</i>,<i> N. pulcher</i>,<i> Telmatochromis temporalis</i>) sought shelter in the nearest refuge. Among the navigating species, homing success declined with displacement distance, and long-distance performance (at 15 m) differed: <i>N. meeli</i> (largest range, fewest shelters) succeeded in 80% of trials, while <i>L. ocellatus</i> and <i>L. ornatipinnis</i> (smaller ranges, marginally more shelters) succeeded in only ~ 10% of trials. Arena experiments revealed that the two better-performing species in the field preferentially searched in areas previously associated with their home shell, with <i>N. meeli</i> showing additional use of experimental landmarks. Our findings provide a detailed comparative foundation for future work, highlighting how ecological context shapes spatial cognition in natural populations.</p>\u0000 </div>","PeriodicalId":7879,"journal":{"name":"Animal Cognition","volume":"29 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13083442/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147669900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Animal CognitionPub Date : 2026-04-10DOI: 10.1007/s10071-026-02061-5
Pizza Ka Yee Chow, Théo Robert, Sophie Donnelly, Kevin D Hochard
{"title":"Male bumblebees (Bombus terrestris) are more active and behaviourally flexible than workers.","authors":"Pizza Ka Yee Chow, Théo Robert, Sophie Donnelly, Kevin D Hochard","doi":"10.1007/s10071-026-02061-5","DOIUrl":"https://doi.org/10.1007/s10071-026-02061-5","url":null,"abstract":"","PeriodicalId":7879,"journal":{"name":"Animal Cognition","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147643650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Animal CognitionPub Date : 2026-03-24Epub Date: 2026-04-08DOI: 10.1007/s10071-026-02053-5
Julia Sikorska, Maciej Trojan, Anna Jakucińska, Alicja Broncel , Tetsuro Matsuzawa
{"title":"Chimpanzee decisions in the prosocial choice paradigm depending on the position of tokens in the feeder","authors":"Julia Sikorska, Maciej Trojan, Anna Jakucińska, Alicja Broncel , Tetsuro Matsuzawa","doi":"10.1007/s10071-026-02053-5","DOIUrl":"10.1007/s10071-026-02053-5","url":null,"abstract":"<div>\u0000 \u0000 <p>The prosocial choice paradigm is a widely used method in studies of prosocial behavior in chimpanzees, but findings produced using this approach have been inconsistent. One potential source of these discrepancies is the lack of control for motor lateralization. The present study examined the influence of motor lateralization on decision-making in four chimpanzees <i>(Pan troglodytes</i>) housed at the Warsaw Zoo. Subjects chose between prosocial (1/1) and selfish (1/0) tokens under three experimental conditions: (a) tokens randomly mixed within the feeder, (b) tokens arranged in single-color stacks on opposite sides, and (c) mixed tokens without a partner (ghost condition). Each individual made 200 decisions per condition over a three-month period. Results indicated that chimpanzees were significantly more likely to choose the prosocial option when token placement minimized lateralization effects through random mixing. In contrast, when tokens were presented in fixed locations, choices were systematically influenced by the physical convenience of reaching, reflecting individual motor preferences. These findings highlight the importance of controlling motor lateralization in studies using the prosocial choice paradigm. Even with motor lateralization controlled, the presence of a partner proved essential for demonstrating prosociality. Prosociality was not detected in the so-called ghost condition, where no partner is present. Future research should increase the number of trials, distribute sessions over time, randomize token placement, and examine the relationship between task-based decisions and broader patterns of social interaction.</p>\u0000 </div>","PeriodicalId":7879,"journal":{"name":"Animal Cognition","volume":"29 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10071-026-02053-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147508717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Animal CognitionPub Date : 2026-03-18Epub Date: 2026-03-24DOI: 10.1007/s10071-026-02058-0
Mason Youngblood
{"title":"Zebra finches transform manipulated songs with shuffled syllables to exhibit linguistic laws","authors":"Mason Youngblood","doi":"10.1007/s10071-026-02058-0","DOIUrl":"10.1007/s10071-026-02058-0","url":null,"abstract":"<div>\u0000 \u0000 <p>Linguistic laws are increasingly used as markers of efficiency in non-human communication, but it remains unclear how rapidly these patterns can emerge. In this re-analysis of experimental data from James and Sakata (Current Biology 27:3676–3682, 2017), I assessed whether zebra finches tutored with songs with shuffled syllables, where each syllable type is equally common and songs have equal length, transform them to exhibit three linguistic laws associated with efficiency in human language. Menzerath’s law and Zipf’s rank-frequency law are present in the learned songs to a similar extent as in human language, while there is only weak support for Zipf’s law of abbreviation. These results suggest that some measures of language-like efficiency can emerge extremely rapidly, while others may require iterated social learning.</p>\u0000 </div>","PeriodicalId":7879,"journal":{"name":"Animal Cognition","volume":"29 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13013388/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147479510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Can you read my poker-face? Adapting the still-face paradigm to explore dog’s interspecific communication","authors":"Chiara Canori, Giulia Pedretti, Tiziano Travain, Chiara Annoni, Laura Sabbadini, Paola Valsecchi","doi":"10.1007/s10071-026-02059-z","DOIUrl":"10.1007/s10071-026-02059-z","url":null,"abstract":"<div>\u0000 \u0000 <p>Domestic dogs rely on a sophisticated repertoire of visual displays to regulate social interactions. However, the interpretation of some of these displays, such as facial expressions, remain unclear. In the present study, we investigated the communicative strategies dogs’ employ to re-establish a positive interaction with humans. We adopted a modified version of the classical Still-Face Paradigm and introduced two non-responsive phases: the classical “still-face” phase (human attentive but unresponsive) and a novel “face-away” phase (human turned away and inattentive) to test the flexibility of communicative signals modalities used by dogs. The test was conducted with both the owner (attachment figure) and a familiar human (familiar dog trainer). Results showed that dogs displayed a rich repertoire of visual and facial signals, which may serve affiliative and communicative functions, particularly during the first interaction and, overall, more towards their owner compared to the familiar human. Confirming a still-face effect, the frequency and duration of these behaviours significantly decreased in the non-responsive phases, compared to the first interaction. Contrary to our predictions, no differences emerged between the still-face and face-away phases and the exhibition of signals generally decreased in subsequent phases indicating a possible carry over effect. The higher communicative persistence towards the owner compared to the familiar human underscores the crucial role of the attachment bond in shaping the dog’s communicative strategies. These findings highlight the attachment bond as a key factor in interspecific communication, extend current research on the still-face paradigm in domestic dogs, and provide a valuable methodological tool for future investigations.</p>\u0000 </div>","PeriodicalId":7879,"journal":{"name":"Animal Cognition","volume":"29 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13002743/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147455108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}