• Do monkeys use sex toys? Evidence of stone tool-assisted masturbation in free-ranging long-tailed macaques 

  Cenni, Camilla; Christie, Jessica B. A.; Van der Pant, Yanni; Gunst, Noëlle; Vasey, Paul L.; Wandia, Nengah; Leca, Jean-Baptiste (Wileyhttps://doi.org/10.1111/eth.13324, 2022)

  Recent reports on tool use in nonforaging contexts have led researchers to reconsider the proximate drivers of instrumental object manipulation. In this study, we explore the physiological and behavioral correlates of ...
• Sexual adaptation: is female-male mounting a supernormal courtship display in Japanese macaques? 

  Gunst, Noëlle; Leca, Jean-Baptiste; Vasey, Paul L. (BrillArts and ScienceDepartment of Psychologyhttps://doi.org/10.1163/1568539X-bja10161, 2022)

  We analysed heterosexual consortships in a free-ranging group of Japanese macaques in which adult females routinely perform female-to-male mounting (FMM). We tested whether FMM is more efficient (i.e., a “supernormal ...
• Animal culture: how a birdsong went viral 

  Logue, David M.; Leca, Jean-Baptiste (Cell PressArts and ScienceDepartment of PsychologyUniversity of LethbridgeUniversity of Puerto Ricohttps://doi.org/10.1016/j.cub.2020.06.055, 2020)

  A new white-throated sparrow song has overtaken most of Canada in less than 20 years. The explanation for this remarkably fast spread may lie in the southern migratory grounds, where populations from across Canada converge ...
• When males have females on their backs: male's tolerance, solicitation, and use of female-male mounting in Japanese macaques 

  Gunst, Noëlle; Leca, Jean-Baptiste; Vasey, Paul L. (WileyArts and ScienceDepartment of PsychologyUniversity of Lethbridgehttps://doi.org/10.1002/ajp.23395, 2022)

  Previous research on Japanese macaques has shown that female-to-male mounting (FMM) is performed by some females as an exaggerated form of sexual solicitation that may occur in the context of high female competition for ...
• Are the roots of human economic systems shared with non-human primates? 

  Addessi, Elsa; Beran, Michael J.; Bourgeois-Gironde, Sacha; Brosnan, Sarah F.; Leca, Jean-Baptiste (ElsevierArts and ScienceDepartment of PsychologyISTC-CNRGeorgia State UniversityInstitut Jean-NicodUniversity of Lethbridgehttps://doi.org/10.1016/j.neubiorev.2019.12.026, 2020)

  We review and analyze evidence for an evolutionary rooting of human economic behaviors and organization in non-human primates. Rather than focusing on the direct application of economic models that a priori account for ...
• Acquisition of object-robbing and object/food-bartering behaviours: a culturally maintained token economy in free-ranging long-tailed macaques 

  Leca, Jean-Baptiste; Gunst, Noëlle; Gardiner, Matthew; Wandia, I. Nengah (The Royal Society PublishingArts and ScienceDepartment of PsychologyUniversity of LethbridgeUdayana Universityhttps://doi.org/10.1098/rstb.2019.0677, 2021)

  The token exchange paradigm shows that monkeys and great apes are able to use objects as symbolic tools to request specific food rewards. Such studies provide insights into the cognitive underpinnings of economic behaviour ...
• Two types of withdraw-to-eat movement related to food size in long-tailed macaques (Macaca fascicularis): insights into the evolution of the visual control of hand shaping in anthropoid primates 

  Hirsche, Laurie A.; Cenni, Camilla; Leca, Jean-Baptiste; Whishaw, Ian (Sciknow PublicationsArts and ScienceDepartment of NeuroscienceDepartment of PsychologyUniversity of LethbridgeNational Institute of Advanced Studies (Bangalore, India)https://doi.org/10.26451/abc.09.02.02.2022, 2022)

  The details of the evolutionary steps in the transition from nonvisual guidance of hand movements for feeding, as displayed by many non-primate species, to visual guidance of hand movements in primates are sparse. Contemporary ...
• Behavior systems approach to object play: stone handling repertoire as a measure of propensity for complex foraging and percussive tool use in the genus Macaca 

  Pelletier, Amanda N.; Kaufmann, Tatjana; Mohak, Sidhesh; Milan, Riane; Nahallage, Charmalie A. D.; Huffman, Michael A.; Gunst, Noëlle; Rompis, Aida; Wandia, I Nengah; Arta Purta, I Gusti A.; Pellis, Sergio M.; Leca, Jean-Baptiste (SciKnow PublicationsArts and ScienceDepartment of NeuroscienceDepartment of PsychologyUniversity of LethbridgeUniversity of Sri JayewardenepuraKyoto UniversityUdayana Universityhttps://dx.doi.org/10.26451/abc.04.04.05.201, 2017)

  Stone handling (SH), has been identified in four closely related primate species of the Macaca genus. We provide the first ethogram of SH in long-tailed macaques (Macaca fascicularis), a primate species known to use stones ...
• Is play a behavior system, and, if so, what kind? 

  Pellis, Sergio M.; Pellis, Vivien C.; Pelletier, Amanda; Leca, Jean-Baptiste (ElsevierArts and ScienceDepartment of NeuroscienceDepartment of PsychologyUniversity of Lethbridgehttps://doi.org/10.1016/j.beproc.2018.12.011, 2019)

  Given that many behavior patterns cluster together in sequences that are organized to solve specific problems (e.g., foraging), a fruitful perspective within which to study behaviors is as distinct ‘behavior systems’. ...
• Octopus consciousness: the role of perceptual richness 

  Mather, Jennifer (MDPIArts and ScienceLibraryUniversity of Lethbridgehttps://doi.org/10.3390/neurosci2030020, 2021)

  It is always difficult to even advance possible dimensions of consciousness, but Birch et al., 2020 have suggested four possible dimensions and this review discusses the first, perceptual richness, with relation to octopuses. ...
• Why are octopuses going to be the 'poster child' for invertebrate welfare? 

  Mather, Jennifer (Taylor & FrancisArts and ScienceDepartment of PsychologyUniversity of Lethbridgehttps://doi.org/10.1080/10888705.2020.1829488, 2022)

  Animal welfare consideration and actions are generally addressed to animals similar to us, predominantly large mammals. Invertebrates are neglected partly because they are unknown, though new exploration of the oceans has ...
• Duetting behavior varies with sex, season, and singing role in a tropical oriole (Icterus icterus) 

  Odom, Karan J.; Logue, David M.; Studds, Colin E.; Monroe, Michelle K.; Campbell, Susanna K.; Omland, Kevin E. (Oxford University PressArts and ScienceDepartment of PsychologyUniversity of MarylandCornell UniversityUniversity of LethbridgeJohns Hopkins University School of MedicineUniversity of Michiganhttps://doi.org/10.1093/beheco/arx087, 2017)

  Females and males of many animals combine their vocalizations into coordinated acoustic duets. Duets can mediate both cooperation and conflict between partners, and are common in tropical, sedentary species that may use ...
• The evolution of vocal duets and migration in New World warblers (Parulidae) 

  Mitchell, Liam R.; Benedict, Lauryn; Cavar, Jakica; Najar, Nadje; Logue, David M. (Oxford AcademicArts and ScienceDepartment of PsychologyUniversity of LethbridgeUniversity of Northern ColoradoUniversidad de Puerto Ricohttps://doi.org/10.1093/auk/ukz003, 2019)

  Vocal duets occur when 2 individuals vocalize in temporal coordination. In birds, duet participation functions to cooperatively defend shared resources, localize mates, and in some species, guard the mate. Previous work ...
• Quantifying song categories in Adelaide's Warbler (Setophaga adelaidae) 

  Kaluthota, Chinthaka D.; Medina, Orlando J.; Logue, David M. (SpringerArts and ScienceDepartment of PsychologyUniversity of LethbridgeCabo Rojo National Wildlife Refuge (P. R.)Universidad de Puerto Ricohttps://doi.org/10.1007/s10336-018-01623-w, 2019)

  Many migratory wood-warblers in the genus Setophaga divide their song repertoires into two categories. Category B songs are usually sung before dawn, with immediate variety and short latencies between songs, whereas category ...
• Within-day improvement in a behavioural display: wild birds 'warm up' 

  Schraft, Hannes A.; Medina, Orlando J.; McClure, Jesse; Pereira, Daniel A.; Logue, David M. (ElsevierArts and ScienceDepartment of PsychologySan Diego State UniversityUniversity of California, DavisUniversity of Puerto RicoUniversity of MassachusettsUniversidad del ValleUniversity of Lethbridgehttps://doi.org/10.1016/j.anbehav.2016.12.026, 2017)

  Motor performance describes the vigour or skill required to perform a particular display. It is a behaviourally salient variable in birdsong and other animal displays, but little is known about within-individual variation ...
• Assessing the similarity of song-type transitions among birds: evidence for inter-species variation 

  Hedley, Richard W.; Logue, David M.; Benedict, Lauryn; Mennill, Daniel J. (ElsevierArts and ScienceDepartment of PsychologyUniversity of California, Los AngelesUniversity of LethbridgeUniversity of Northern ColoradoUniversity of Windsorhttps://doi.org/10.1016/j.anbehav.2018.04.008, 2018)

  In many species of songbird, individuals sing multiple song types, some of which are shared with their neighbours. Individuals may also share syntactical rules that govern the transitions between different song types, but ...
• Aggressiveness and size: a model and two tests 

  Logue, David M.; Takahashi, April D.; Cade, William H. (University of Chicago PressArts and ScienceDepartment of Biological SciencesDepartment of PsychologyUniversidad de Puerto RicoUniversity of Lethbridgehttps://doi.org/10.1086/657978, 2011)

  Individual variation in aggressive behavior in animals might be caused by adaptive covariation with body size. We developed a model that predicts the benefits of aggressiveness as a function of body size. The model indicated ...
• A locally funded Puerto Rican parrot (Amazona vittata) genome sequencing project increases avian data and advances young researcher education 

  Oleksyk, Taras K.; Pombert, Jean-Francois; Siu, Daniel; Mazo-Vargas, Anyimilehidi; Ramos, Brian; Guiblet, Wilfried; Afanador, Yashira; Ruiz-Rodriguez, Christina T.; Nickerson, Michael L.; Logue, David M.; Dean, Michael; Figueroa, Luis; Valentin, Ricardo; Martinez-Cruzado, Juan-Carlos (Oxford University PressArts and ScienceDepartment of PsychologyUniversity of Puerto Rico at Mayagüez,University of British ColumbiaAxeq TechnologiesNational Cancer Institute (U.S.)Compañía de Parques Nacionales de Puerto Rico,Department of Natural and Environmental Resources (Peurto Rico)University of Lethbridgehttps://doi.org/10.1186/2047-217X-1-14, 2012)

  Background: Amazona vittata is a critically endangered Puerto Rican endemic bird, the only surviving native parrot species in the United States territory, and the first parrot in the large Neotropical genus Amazona, to be ...
• Chorus song of the indri (Indri indri: Primates, Lemuridae): Group differences and analysis of within-group vocal interactions 

  Baker-Medard, Merrill S. A.; Baker, Myron C.; Logue, David M. (eScholarship Publishing, University of CaliforniaArts and ScienceDepartment of PsychologyUniversity of California, BerkeleyColorado State UniversityUniversidad de Peurto RicoUniversity of Lethbridgehttps://escholarship.org/uc/item/0gg070fd, 2013)

  The loud chorus songs of the group-living lemur Indri indri are a striking feature of rainforest areas of eastern Madagascar. Despite some research on the conspicuous vocal display of the indri, two hypotheses have not ...
• Duetting as a collective behavior 

  Logue, David M.; Krupp, Daniel B. (Frontiers Research FoundationArts and ScienceDepartment of PsychologyUniversity of LethbridgeQueen's UniversityOne Earth Future Foundationhttps://doi.org/10.3389/fevo.2016.00007, 2016)

  Mated birds of many species vocalize together, producing duets. Duetting behavior occurs at two levels of organization: the individual level and the pair level. Individuals initiate vocalizations, answer their mates’ ...

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