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Posts by Berkay Arslan

A composite image of me from the red carpet at the Hoppers premiere with the Hoppers logo and several hoppers characters.

A composite image of me from the red carpet at the Hoppers premiere with the Hoppers logo and several hoppers characters.

After about 5 years (!) of keeping secrets, I am so excited that Disney Pixar's Hoppers is finally coming out on March 6th!

Back in 2021, Pixar emailed me asking if I could give a talk about my research to their employees. Then another talk. And another.

📸 Disney/Jesse Grant/Getty Images

1 month ago 194 40 8 10
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.

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.

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

1 month ago 34 13 1 1
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Our new paper (with @biotay.bsky.social) is out and on the cover story of @currentbiology.bsky.social !!!! Veronika, a Carinthian mountain cow flexibly uses a “multi-purpose tool” to scratch herself. A video and more information will follow in the comments.
www.cell.com/current-biol...

3 months ago 353 124 9 31
Video

1/2 Ai, the chimpanzee who revolutionized science from Kyoto, has died at the age of 49.
She was the first chimpanzee to learn Arabic numerals.
Here you can see her in action in Tetsuro Matsuzawa's laboratory.

3 months ago 24 18 1 0
A graph comparing the number of neurons in the telencephalon of reptiles, birds, and two estimates for T. rex. Even the lowest of these estimates suggests the telencephalic neuron count of T. rex to be similar to that of a pygmy falcon or blackbird - several times more than the largest telencephalic neuron count of extant reptiles.

A graph comparing the number of neurons in the telencephalon of reptiles, birds, and two estimates for T. rex. Even the lowest of these estimates suggests the telencephalic neuron count of T. rex to be similar to that of a pygmy falcon or blackbird - several times more than the largest telencephalic neuron count of extant reptiles.

New paper out! 🧪
On reconstructing dinosaur cognition through contemporary cognitive science - a primer on the function of neurons and cognition, the role of extant animals, thermobiology, tools, arms races, foraging, and model-based cognition.
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...

4 months ago 32 14 0 0
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STbayes: An R package for creating, fitting and understanding Bayesian models of social transmission A critical consequence of joining social groups is the possibility of social transmission of information related to novel behaviours or resources. Network-based diffusion analysis (NBDA) has emerg...

🎉🍾 very excited to see this out before 2025 ends doi.org/10.1111/2041... with Will Hoppitt in @methodsinecoevol.bsky.social. This paper is an overview of our new R package STbayes, a user-friendly toolkit for performing Bayesian NBDA analyses. @cbehav.bsky.social @mpi-animalbehav.bsky.social

4 months ago 80 32 1 3
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New paper out today w @dalmaijer.bsky.social @barbaraklump.bsky.social and @lucymaplin.bsky.social as part of the Phil Trans special issue doi.org/10.1098/rstb.... Over 2 years, we studied a population of cockatoos thought to be the source of the innovation of bin-opening.

4 months ago 105 42 3 8
Ella holds a fluffy and sleepy looking toutouwai chick during banding and fits an orange band to its leg

Ella holds a fluffy and sleepy looking toutouwai chick during banding and fits an orange band to its leg

PhD scholarship alert! Are you interested in cognitive evolution? Do you want to know how development influences cognitive traits? Do you love hanging out with birds in the forest? If the answer to these questions is yes, please apply to work with us! 1/2 🧪
www.wgtn.ac.nz/scholarships...

5 months ago 49 48 1 3
Family friendly waiting room for participants

Family friendly waiting room for participants

Family friendly waiting room, picture shows children's play area

Family friendly waiting room, picture shows children's play area

Room for Research Assistants

Room for Research Assistants

Come join the Moral Minds Lab as a grad student at MSU! Brand-new lab equipped for child & adult testing, with motivated undergrads in a happy department. 🤩

Learn more: www.moralmindslab.com/join-our-tea...

(P.S. @tedmond.bsky.social is also taking a student!) @msupsychology.bsky.social

6 months ago 67 26 2 2
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MSc by Res opportunity - developing behavioural indicators to inform killer whale conservation with
@exeter.ac.uk @whaleresearch.bsky.social @seadocsociety.bsky.social

People from underrepresented groups in marine science encouraged to apply.

Deadline 19Dec

www.exeter.ac.uk/study/fundin...

6 months ago 29 21 1 3
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Social learning is critical to breastfeeding success: evidence from rural Namibian pastoralists AbstractBackground and objectives. Lactation is one of the defining features of mammals, yet many humans struggle with breastfeeding. One reason for this i

New paper out on the important role of social learning in breastfeeding! academic.oup.com/emph/article...

6 months ago 28 14 0 1
Shaped by domestication: Did the evolution of facial muscle anatomy and ear morphology in dogs reflect adaptations to humans’ unconscious preferences?

We’re looking for a motivated & curious researcher to join our team as a PhD candidate! You’ll work with Prof. Bridget Waller, Dr. Annika Bremhorst, & me at the Dog Cognition Centre, UoP.
Are you fascinated by the dog–human bond & dog-human communication? 🐶
Interested? Get in touch with me.

6 months ago 18 27 0 0
ERC funded PhD position on Cultural Evolution ERC funded PhD position on Cultural Evolution posted on October 16, 2025 We are currently seeking a highly motivated individual for a ful...

Fully-funded 4-year #PhD in Cultural Evolution! Join my @erc.europa.eu project exploring how compression & compositionality drive cultural innovation: hmc-lab.com/ERCPhDCultur...
Apply by Nov 12!
Maybe of interest to folks from #COSMOS2025 or @eslr.bsky.social? Please feel free to share! 🙏

6 months ago 65 62 1 3
The Adaptive Relationships Framework illustrating how broad socioecological pressures shape the social solutions animals use to meet these challenges, and how these lead to social strategies and emergent structures that help them gain access to those solutions.

The Adaptive Relationships Framework illustrating how broad socioecological pressures shape the social solutions animals use to meet these challenges, and how these lead to social strategies and emergent structures that help them gain access to those solutions.

Social relationships are powerful predictors of fitness across social animals. But *why*?

In our new @cp-trendsecolevo.bsky.social paper, we outline testable predictions for why relationship quality and quantity adaptively vary across socio-ecological contexts.

tinyurl.com/55dnkeh7

6 months ago 100 53 1 3

So excited that our first major empirical @themanybirds.bsky.social paper is now out in @plosbiology.org!
Leading this big team science project, with our excellent core leadership team, is a labour of love for me, delighted to see our hard work over the past 4 years has reached this milestone!

6 months ago 48 15 0 3
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.

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.

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

6 months ago 9 6 1 0
Image showing Hobson Lab logo (with parakeets, a social network, and R code), two Monk Parakeets, and several individually-marked parakeets with the text "Now recruiting PhD students!!"

Image showing Hobson Lab logo (with parakeets, a social network, and R code), two Monk Parakeets, and several individually-marked parakeets with the text "Now recruiting PhD students!!"

**PhD POSITIONS** I am recruiting 1-2 PhD students to work on sociality and cognition in Monk Parakeets, starting Fall 2026. Full ad is here: hobsonresearch.com/index.php/20... (please help spread the word!)

6 months ago 58 83 2 3
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Please share!🙏
🚨 PhD Oportunity in Avian Behavioural Ecology in Spain
The BirdBond Project (MNCN & IREC) studies how pair bonds form, change & affect reproduction/survival in the spotless starling 🐦

7 months ago 70 77 2 2
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7 months ago 37 58 1 1
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Flyer for Open Methods in Comparative Cognition Research webinar

Flyer for Open Methods in Comparative Cognition Research webinar

Looking forward to discussing open methods in comparative cognition, including the challenge of 'species fair' task design as part of the ManyManys webinar series 🤩

🐒🦜🐜🐕👶🦎🐐🐟

📅 September 12, 11:00 a.m. (ET) on Zoom

🔗Registration: airtable.com/app0bcw8jYPv...

#openscience #bigteamscience

7 months ago 11 6 0 1
Five misunderstandings in animal social network analysis

🐒🕸️ New preprint! Confused about how to model animal social networks?

ASNA can be confusing—but also full of opportunity. We break down 5 common misunderstandings in animal social network analysis and share solutions from behavioural ecology, anthro, stats, & network science. Hope it helps!

A 🧵

8 months ago 50 23 2 3
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🎊 New paper out! In this @cp-trendscognsci.bsky.social Forum, we (with @lucasmolleman.bsky.social and @bjornlindstrom.bsky.social) summarize how reward learning can lead to adaptive social learning. We also explore the broader consequences for cultural evolution:
www.cell.com/trends/cogni... 🚄

8 months ago 24 7 2 1

Congrats Elisa and Sofia on the first (of many) papers that derived from their @einsteinberlin.bsky.social price-winning project (paper available here: onlinelibrary.wiley.com/doi/10.1111/...)

9 months ago 29 12 1 0
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Social anxiety in macaques

Tibetan macaques show self-directed behaviors before facing difficult social situations. For example, when females plan to approach higher-ranking females, or when low-ranking males are plan to approach receptive females.

(paper) onlinelibrary.wiley.com/doi/10.1002/...

9 months ago 18 8 0 0
Career Opportunities: PhD position Cooperative Sustainability (14208)

🎊Fully funded PhD position on cooperative sustainability🌳

Are you curious about
🧒 developmental,
🌍 cross-cultural
🦧 species comparative
research on cooperative sustainability?

All info here or dm me with questions!
career2.successfactors.eu/sfcareer/job...
Please share! 🙏

10 months ago 16 25 0 5
Map of study site showing the islands of Coiba and Jicarón in Coiba National Park, Panama. On Coiba, both sexes of adult white-faced capuchins use stone tools, while on Jicarón only males have been observed to use tools.

Map of study site showing the islands of Coiba and Jicarón in Coiba National Park, Panama. On Coiba, both sexes of adult white-faced capuchins use stone tools, while on Jicarón only males have been observed to use tools.

Why do we see sex-biases in tool use in some primate groups but not in others? Read my 2nd PhD chapter, #openaccess in American Journal of Primatology
(doi.org/10.1002/ajp....) for an exploration of this question in an unique island system where white-faced capuchins use stone tools. A 🧵 (1/8)

1 year ago 29 9 1 3
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Postdoctoral Fellowships call: 6 steps to prepare your application These tips and tricks will help you find the best host organisation and prepare a successful proposal.

📢 The MSCA Postdoctoral Fellowship call is now open!
Join our international expert team to explore minds across species.

We study:
🐒 Primates
🐕 Dogs
🐘 Elephants
🐴 Donkeys and horses

🔗 contact one of us to discuss your application: marie-sklodowska-curie-actions.ec.europa.eu/actions/post...
#MSCA

11 months ago 8 7 1 1
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Chimpanzee drumming shows rhythmicity and subspecies variation Chimpanzees drum on the buttress roots of trees for communication. Eleuteri et al. investigate the presence of key elements of musical rhythm and of regional variation in chimpanzee buttress drumming....

TLDR: new paper headed up by @vestaeleuteri.bsky.social
& with an awesome team, incl @andrearavignani.bsky.social , showing chimps have rhythm in their drumming & differences b/w east & west drum rhythms!

www.cell.com/current-biol...

But didn’t we know this already you ask? Well… 🧵1/16

11 months ago 70 30 4 9

My interview for *The Philosopher's Zone* podcast on Feminism and Primatology is out now!

I managed to scrounge up the courage to listen and I'm quite proud 🙃

You can listen to the ep via the ABC website or in the usual podcast places

#hps #sts #histsci #PhilSci #feminism #primatology

11 months ago 82 26 3 1
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Wanted to share a handy little resource with you all (especially those in dev psych) — my lab & I made a "journal submission cheat sheet" that summarizes article types, word limits, & other requirements for the journals we typically submit to. Link below 👇🏼
docs.google.com/spreadsheets...

11 months ago 129 63 7 4