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Christoph Völter

@christophvoelter.bsky.social
1.2K followers 704 following 23 posts

Comparative & Developmental Psychologist at the Max Planck Institute for Evolutionary Anthropology 🦍 and the Messerli Research Institute 🐕

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Reposted by Christoph Völter
Oded Ritov @oded-ritov.bsky.social · 30/09/2026
Do chimpanzees value their friendships enough to pass on juicy pineapple? In our new paper, out now at Evolution and Human Behavior, we find that they do! www.sciencedirect.com/science/arti...
Screenshot of the paper header on ScienceDirect. Evolution and Human Behavior, Volume 47, Issue 6, November 2026, article 106948. Title: "Chimpanzees steal less from their friends and expect them to do the same." Authors: Oded Ritov, Christoph J. Völter, Liran Samuni, Avi Benozio, Dacher Keltner, Jan M. Engelmann, Laura S. Lewis, Esther Herrmann.
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Behaviour 2027 @behaviour2027.bsky.social · 24/09/2026
Spread the word! Behaviour 2027 will be taking place in Vienna, Austria, from August 23-27.
Galapagos short-eared owl with text "Who is excited about behaviour 2027? Join us in Vienna August 23-27"
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Chris Krupenye @chriskrupenye.bsky.social · 10/09/2026
🚨 PhD position in human, nonhuman primate, and/or dog cognition! I am thrilled to be reviewing applicants this year for a new PhD student to join the Social & Cognitive Origins Group in the Department of Psychological & Brain Sciences at Johns Hopkins @jhu.edu @jhuartssciences.bsky.social 1/
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Susana Monsó @susanamonso.com · 10/09/2026
We have a new little paper out: an introduction to the philosophy of comparative psychology. If you're tired of artificial intelligences, you can read about biological ones instead.
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Veera Ruuskanen @veerahelmisofia.bsky.social · 20/08/2026
Super excited to see our review out in TiCS! Here me & @cogsci.nl present the first comprehensive framework of the mechanisms driving relationships between spontaneous pupil-size fluctuations, neural activity, and behavior 👀🧠👩🏻‍💻 Spoiler: arousal is only one of at least four 😶‍🌫️ doi.org/10.1016/j.ti...
doi.org
Redirecting
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Federico Rossano @federicorossano.bsky.social · 20/08/2026
Chimpanzees usually fail a simple pointing task that human infants and dogs pass. In our new iScience paper, we provide a possible explanation: once their attention is engaged, chimpanzees use human pointing to find hidden food 73% of the time. Attention may be the missing piece.
Figure 2. Three photos showing the experimental conditions. Left: the experimenter points toward the baited container while calling the chimpanzee’s name and making food grunts. Center: he points without vocal attention-getting cues. Right: he provides gaze and food grunts but does not point. Chimpanzees succeeded only when attention-getting cues and pointing were combined.
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Christoph Völter @christophvoelter.bsky.social · 28/07/2026
Join us in Vienna! We are looking for a #PhD student and a #Postdoc to investigate #innovation in great #apes: PhD ad: share.eva.mpg.de/index.php/s/... Postdoc ad: share.eva.mpg.de/index.php/s/... Application deadline: August 17th. Please share widely!
A chimp solving a puzzle box problem. Photo credit: MPI-EVA
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Cliodhna Quigley @cvq.bsky.social · 24/07/2026
The Euro banknotes are being redesigned. Some of them feature European birds 🕊️! More info here www.ecb.europa.eu/euro/banknot... including a survey where you can share your opinions on the candidate designs
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Yarrow Dunham @yarrowdunham.bsky.social · 23/07/2026
Yale is hiring in developmental psychology (open rank )! We're especially interested in complementing and broadening our area, including via somewhat less traditionally central such as cross-cultural and comparative approaches. Feel free to reach out with questions!
nam12.safelinks.protection.outlook.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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Angela Stoeger @angelastoeger.bsky.social · 16/07/2026
Behaviour 2027 will be held in Vienna. Thrilled to support the scientific organizing committee…. Stay tuned for updates behaviour2027.eventsairsite.com
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Behaviour 2027 @behaviour2027.bsky.social · 09/07/2026
We are excited to announce that #Behaviour2027 (XXXIX International Ethological Congress) will be taking place in Vienna, Austria! We are looking forward to having you all join us next year from August 23-27. Please follow and share!
Logo of a gosling looking up at a bee on its beak. "Behaviour" underneath.
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Gabriella E. Smith, PhD @explanimals.bsky.social · 08/07/2026
Dream PhD opening! Innovation in wild falcons! Application deadline Aug 1🦅
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Alice Auersperg @auersperga.bsky.social · 01/07/2026
We have an exciting new position in our group for a PhD on parrot innovation !!! The position will be part of our new @fwf-at.bsky.social Emerging Fields project with @barbaraklump.bsky.social , @mohara.bsky.social , @christophvoelter.bsky.social and Justus Piater. Apply & share!!
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Barbara Klump @barbaraklump.bsky.social · 30/06/2026
More of a field person? We have a work contract available on walnut dropping in carrion crows within the @wwtf.at funded project on "The interplay between cognition and ecology in extractive foraging behaviours". More info: barbaraklump.com Application deadline July 24th. Please share widely!
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Barbara Klump @barbaraklump.bsky.social · 30/06/2026
Join us in Vienna! We are looking for a PhD student and a Postdoc to investigate innovation in corvids within the “Comparative ecological innovation styles” project funded by @fwf-at.bsky.social. More info: barbaraklump.com Application deadline July 24th. Please share widely!
A carrion crow holding a walnut. Photo: @valentine-comin.bsky.social
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MPI-EVA Leipzig @mpi-eva-leipzig.bsky.social · 23/06/2026
Striking global similarities: New cross-cultural study reveals that the bond between #humans & #dogs remains remarkably consistent across societies. Study led by Juliane Bräuer @uni-jena.de & Russell Gray @mpi-eva-leipzig.bsky.social More: tinyurl.com/2hn2dt6b & doi.org/10.1038/s415...
tinyurl.com
Striking global similarities in interactions between dogs and humans
New cross-cultural study reveals that the bond between humans and dogs remains remarkably consistent across societies
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Manuel Bohn @elmanubohn.bsky.social · 18/06/2026
Nice coverage of our Psych Science paper on individual differences in great ape cognition in the APS observer (@psychscience.bsky.social) by @alicesunreports.bsky.social www.psychologicalscience.org/news/2026-ju...
psychologicalscience.org
Like Humans, Great Apes Think Differently From Each Other
A new study assesses how cognitive skills of great apes vary between individuals.
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Christoph Völter @christophvoelter.bsky.social · 20/05/2026
Two postdoc positions at the Messerli Research Institute in Vienna in the research area of human-animal interactions: www.vetmeduni.ac.at/fileadmin/v/...
vetmeduni.ac.at
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Christoph Völter @christophvoelter.bsky.social · 17/05/2026
New #dog #eyetracking paper: Pupil size changes reveal that dogs have expectations about the usual response to some conventional human gestures in a third-party context. www.sciencedirect.com/science/arti... led by Lucrezia Lonardo and w/ Ludwig Huber.
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Alex Chan @alexhhchan.bsky.social · 28/04/2026
My supervisor Kano is advertising multiple open positions! Check out the doc :) Open Positions @ Kyushu Univ (Kano Lab) Postdoc / Tech staff / PhD-MSc Eye-gaze & social cognition (exp + field + CV) 🎥 youtu.be/rXT-yjQzJxU 📁 docs.google.com/document/d/1... @animalopps.bsky.social
youtu.be
groupdemo kyushu 04132026
YouTube video by 狩野文浩
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Alex Sanchez-Amaro @alex-primate.bsky.social · 21/04/2026
Not a secret anymore! I am extremely proud and happy to present you the EVApeCognition Dataset, out now in Scientific Data. Over the last 5 years we have assembled and standardized data from 150 studies on great ape cognition from the WKPRC in the Leipzig Zoo! www.nature.com/articles/s41...
nature.com
EVApeCognition: An 18-Year Dataset of Great Ape Cognition - Scientific Data
Scientific Data - EVApeCognition: An 18-Year Dataset of Great Ape Cognition
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Manuel Bohn @elmanubohn.bsky.social · 17/04/2026
New 🦍 💭 paper in @psychscience.bsky.social We continue to ask simple questions that are hard to answer "Individual Differences in Great Ape Cognition Across Time and Domains: Stability, Structure, and Predictability" Bonus: Rasch models in the supplement 🤓 journals.sagepub.com/doi/10.1177/...
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Chris Krupenye @chriskrupenye.bsky.social · 17/04/2026
Can chimpanzees prepare for mutually exclusive possibilities individually or collectively? Check out our new paper in Phil Trans @royalsociety.org, led by @drelizabethwarren.bsky.social, and funded by @templetonworld.bsky.social! And stay tuned for the next paper, clarifying the mechanism!
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Manuel Bohn @elmanubohn.bsky.social · 16/04/2026
What are children's *naturalistic* everyday experiences like? Nele's paper presents a crucial resource (100+h of 🎥 w/ annotations) that will help us to build the tools we need to study what it's like to be a child in the wild. 🙏to @jacobsfoundation.bsky.social @maxplanck.de @dfg.de for funding!
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Shona Duguid @shona-d.bsky.social · 12/03/2026
Applications are now open for a PhD on collaborative problem-solving with @nicolacutting.bsky.social and myself. The deadline is soon (31st March) so get in touch with questions. jobs.yorksj.ac.uk/vacancy.aspx...
jobs.yorksj.ac.uk
Job Opportunity at York St John University: Academic Associate in Psychology
Part time fixed term Location: YorkSalary: £34,610 to £39,906 per annum (£17,305 to £19,953 pro rata)Introduction to YSJ universityYork St John is an ambitious, modern university at the heart of historic York and there...
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PLOS Biology @plosbiology.org · 23/02/2026
Despite advances, quantifying complex motion info remains challenging. @jtroscianko.bsky.social @kevinjgaston.bsky.social &co present BehaveAI, a #video analysis tool that sees motion as color, tracking animals & classifying #behavior in complex natural scenes @plosbiology.org 🧪 plos.io/4kTF1wX
Illustration of the framework’s structure. Users can specify primary classes and secondary classes across both static and motion video streams (a–f). The right panel shows examples of static and color-from-motion frames from case studies. The color-from-motion trails create characteristic patterns that reveal movement and behavior. The grass moth (Crambidae) is nearly undetectable from still frames due to its color, and motion blur, but it is highly salient in the motion stream (g). The semaphore fly (Poecilobothrus nobilitatus) example shows how motion information can easily disentangle behaviors that are often identical from static frames (e.g., “fly” and “display” appear identical in the static frame, but different in motion). This example also showcases hierarchical classification, with secondary classifiers determining the sex of the flies (h). Sea slaters (Ligia oceanica) are highly camouflaged when static, and salient when moving, resulting in motion models that make far fewer errors (but cannot detect stationary individuals) (i). Human sperm have been classified based on their swimming movement with either symmetric (typically resulting in fast, straight movement), asymmetric (typically resulting in slow, circling, exploratory movement), or weak (twitching, vibrating etc…) strategies. These swimming strategies can be determined without tracking individuals, which is difficult in complex, debris-filled videos (j).
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Christoph Völter @christophvoelter.bsky.social · 09/03/2026
Really looking forward to working together on this new project focusing on the cognitive underpinnings of innovation in parrots, corvids and apes!
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Alice Auersperg @auersperga.bsky.social · 09/03/2026
Our new emerging field within the excellence initiative of the @fwf-at.bsky.social will look into the process of innovation across apes, parrots, corvids and embodied artificial agents with @mohara.bsky.social @barbaraklump.bsky.social @christophvoelter.bsky.social
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Mark O’Hara @mohara.bsky.social · 09/03/2026
Honoured to be among such great colleagues @barbaraklump.bsky.social @christophvoelter.bsky.social @auersperga.bsky.social and Justus Piater, to study fundamental drivers of innovation. And hugely grateful to the @fwf-at.bsky.social to be able to continue the fieldwork on the Tanimbar Islands 🌴🕊️🤠
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Federico Rossano @federicorossano.bsky.social · 07/03/2026
Thrilled to announce our new paper with @elisafelsche.bsky.social , @christophvoelter.bsky.social and Josep Call on how orang-utans and chimpanzees cooperate strategically based on the partner's incentives. www.sciencedirect.com/science/arti...
sciencedirect.com
Orang-utans and chimpanzees cooperate strategically based on the partner’s incentives
Chimpanzees, Pan troglodytes, are often regarded as a model species for the evolution of human cooperation. However, whether chimpanzees' decision-mak…
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Christoph Völter @christophvoelter.bsky.social · 06/03/2026
Far too long in the making.. but finally out in #AnimalBehaviour @asab.org: Orang-utans and chimpanzees #cooperate strategically based on the partner’s incentives. doi.org/10.1016/j.an... w/ @elisafelsche.bsky.social , Josep Call & @federicorossano.bsky.social
Set-up of experiment 2. The tool giver was placed in enclosure 3 (middle), whereas the tool recipient was placed in enclosure 4 (right). The illustration depicts the configuration in which the social and nonsocial apparatuses for both individuals were baited with high-value rewards.
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Simon Fisher @profsimonfisher.bsky.social · 19/02/2026
“Humans across multiple languages spontaneously associate the nonwords kiki & bouba with spiky & round shapes, respectively...We tested the bouba-kiki effect in baby chickens. Similar to humans, they spontaneously chose a spiky shape when hearing a kiki sound & a round shape when hearing a bouba.”😲🧪
science.org
Matching sounds to shapes: Evidence of the bouba-kiki effect in naïve baby chicks
Humans across multiple languages spontaneously associate the nonwords “kiki” and “bouba” with spiky and round shapes, respectively, a phenomenon named the bouba-kiki effect. To explore the origin of t...
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Trends in Cognitive Sciences @cp-trendscognsci.bsky.social · 19/02/2026
Language learning as ontogenetic adaptation Opinion by Manuel Bohn (@elmanubohn.bsky.social) & Marisa Casillas tinyurl.com/48pdbv5b
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Chris Krupenye @chriskrupenye.bsky.social · 05/02/2026
Imagination in bonobos! I am thrilled to share a new paper w/ Amalia Bastos, out now in @science.org We provide the first experimental evidence that a nonhuman animal can follow along a pretend scenario & track imaginary objects. Work w/ Kanzi, the bonobo, at Ape Initiative youtu.be/NUSHcQQz2Ko
youtu.be
Apes Share Human Ability to Imagine
YouTube video by Johns Hopkins University
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Tay (Antonio J. Osuna Mascaró) @biotay.bsky.social · 19/01/2026
Cow Tools! We have lived alongside cows for nearly 10,000 years. We breed them and exploit them It is now, only now, that we have discovered THEY CAN USE TOOLS Here I describe our study (paper) www.sciencedirect.com/science/arti... in @currentbiology.bsky.social with @auersperga.bsky.social
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Christoph Völter @christophvoelter.bsky.social · 07/01/2026
The application deadline for our advertised PhD position ⬇️ on mental simulation in nonhuman apes & children is approaching (January 11th). If you know someone who might be interested please let them know.🙏
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Yuri Kawaguchi @yurikawaguchi.bsky.social · 06/01/2026
I’m thrilled to announce that I’m recruiting a funded PhD student at Nottingham Trent University to study the cognitive mechanisms underlying individual differences in parenting in rhesus macaques! Deadline: 2 February | Start date: April 2026
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Gabriella E. Smith, PhD @explanimals.bsky.social · 17/12/2025
Excited to share that the second paper of my PhD is now published! Kea but not cockatoos are susceptible to a bait-and-switch magic trick. And check out that thermal imaging! ❤️‍🔥 royalsocietypublishing.org/rsos/article...
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Bridget Waller @bridgetwaller.bsky.social · 02/12/2025
Fully-funded PhD position with Yuri Kawaguchi at NTU, associated with her BBSRC Fellowship on parenting in rhesus macaques. Join us! @yurikawaguchi.bsky.social @ntupsychology.bsky.social (note - open to UK students only) www.ntu.ac.uk/study-and-co...
ntu.ac.uk
Enhancing welfare through cognitive assessment of parenting skills in captive managed animals
Find out more about this PhD opportunity funded by BBSRC, hosted through the NTU fully funded studentship scheme.
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Chris Krupenye @chriskrupenye.bsky.social · 02/12/2025
🚨Job Alert plz RT! Johns Hopkins Psych & Brain Sciences is looking for a new colleague using behavioral or computational approaches to study cognition! We are excited about many areas of (esp higher) cognition in human adults, children, or nonhuman animals Open-rank apply.interfolio.com/178146
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Alexis Breen @alexisjbreen.bsky.social · 27/11/2025
There's still time left to apply to join us for the 2026 field season! Deadline: Dec 1 👇🏝️🏕️📊👥
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Royal Society Publishing @royalsocietypublishing.org · 21/11/2025
Beyond criterion: cognitive flexibility in wild striated caracaras: royalsocietypublishing.org/doi/10.1098/... | #BiologyLetters #Behaviour #Cognition #Ecology
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Manuel Bohn @elmanubohn.bsky.social · 19/11/2025
⚠️ New Postdoc or PhD position open (3 years+) ⚠️ 🚩Developmental milestones across cultures 🌍 Based @leuphana.bsky.social , in collaboration with @mpi-eva-leipzig.bsky.social Please share/apply! Link: tinyurl.com/58dsn43u
tinyurl.com
jobs-praktika-aktuell
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Andrea Sommese @asommese.bsky.social · 19/11/2025
Using eye-tracking, we found that dogs, like human infants 👶, look longer at unexpected identity changes but only when they’ve been addressed with eye contact 👀
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Christoph Völter @christophvoelter.bsky.social · 19/11/2025
New #dog #eyetracking study: Joint attention biases dogs’ memory towards object identity. ⬇️
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Theresa Rössler @theroesa.bsky.social · 12/11/2025
Excited to share our newly published study on object neophobia and how it relates to problem-solving in #GoffinsCockatoos #TanimbarCorella! @auersperga.bsky.social @mohara.bsky.social @bmioduszewska.bsky.social @plosone.org doi.org/10.1371/jour...
doi.org
Seizing opportunities: Object neophobia as a factor mediating technical innovation in Goffin´s cockatoos?
Most studies find substantial inter-individual differences in problem-solving performance within a species, which can drastically influence an individual´s fitness. It has been suggested that innovati...
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Christoph Völter @christophvoelter.bsky.social · 13/11/2025
Fully funded #PhDposition in Comparative Cultural Psychology @mpi-eva-leipzig.bsky.social. We will use touchscreen experiments & eyetracking to study mental simulations in nonhuman apes & human children across different cultures. All info here: www.eva.mpg.de/career/posit... Please share / apply!🙏
eva.mpg.de
Positions available - Max Planck Institute for Evolutionary Anthropology
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Emily M. Sanford @emilymsanford.bsky.social · 30/10/2025
Are humans really the only rational animals? Our NEW PAPER 🎉 out in @science.org suggests otherwise! In a large collaboration led with my joint first author @hanna-schleihauf.bsky.social, we show that “Chimpanzees rationally revise their beliefs” 🧵
science.org
Chimpanzees rationally revise their beliefs
The selective revision of beliefs in light of new evidence has been considered one of the hallmarks of human-level rationality. However, tests of this ability in other species are lacking. We examined...
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PLOS Biology @plosbiology.org · 15/10/2025
Fear of novelty varies across species & individuals, impacting adaptability & survival. @themanybirds.bsky.social @drrmiller.bsky.social &co assess #neophobia in 1400 subjects from 136 #bird species, identifying phylogenetic influences & broad ecological drivers @plosbiology.org 🧪 plos.io/4haLEsN
Left: Examples of novel objects used. Each black/white bar is 5 cm long. The objects ranged in size from a third to half the size of the subjects: (a) Southern cassowary, Casuarius casuarius, (b) Moluccan eclectus, Eclectus roratus, (c) Rüppell’s vulture, Gyps rueppelli, (d) gray-winged trumpeter, Psophia crepitans, (e) common waxbill, Estrilda astrild. Right: Secretary bird (Sagittarius serpentarius) at Adlerwarte Berlebeck, Germany, interacting with a novel object. Image credit Kai Caspar.
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