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Posts by Alexis Breen

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Constructing a nest underwater is no easy task! But shell-dwelling cichlids are expert architects, instinctively transforming empty snail shells into protective nests.

Take a deep dive into the new cichlid research from our Institute!

🔗 Press release: www.bi.mpg.de/news/2026-04...

1 week ago 8 4 1 0

Re-amplifying great work I somehow missed—nicely showing what many of us suspected (and then some). #TeamRL 🔥

2 months ago 5 2 0 0
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🚨 Postdoctoral Opportunity for Female Scientists🚨

The University of Vienna is awarding at least 20 fully funded 4 year postdoctoral positions to outstanding female scientists

Interested? Get in touch via direct message
careers.univie.ac.at/en/postdoc/e...

#MicroSky 🧪

#PostDoc @univie.ac.at

4 months ago 98 117 0 3

Ending 2025 strong—new paper out today in #ProcB!
Dynamic strategic social learning in nest-building zebra finches and its generalizability 🐦🌿🧠👩‍💻
Preprint thread below 👇
Paper: royalsocietypublishing.org/rspb/article...

4 months ago 12 5 0 0
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🚨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

4 months ago 56 75 0 1

There's still time left to apply to join us for the 2026 field season! Deadline: Dec 1 👇🏝️🏕️📊👥

4 months ago 6 6 0 0
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BehaveAI is live!

Our biologically inspired video analysis tool sees motion as colour. Track animals or objects, classify their behaviour, and handle complex natural scenes with ease.

Semi-supervised annotation, no GPUs required, user-friendly, free & open source.

Pre-print tinyurl.com/BehaveAI

5 months ago 70 26 2 1
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📣 Apply now for the 🌵CaCTüS 3-month fully funded internship in Germany in 2026!
Work on ML, theor. neuroscience, computational psychiatry, behavioral experiments or data analysis at a top institution in Tübingen. For students facing barriers in higher education. 👉 cactus-internship.tuebingen.mpg.de

6 months ago 11 11 0 0
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#CrowCoG is hiring🚨MULTIPLE PAID RESEARCH ASSISTANT POSITIONS 🚨for our 2026 field season (May - Sep)! Field and aviary-based positions - come help us study the remarkable tool-making New Caledonian crows. Apply here: bit.ly/3WlxxHE

5 months ago 48 50 0 3
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
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Out today in @plosbiology.org (1/5)

Siblings and non-parental adults provide alternative pathways to cultural inheritance in juvenile great tits 🐦🧩

Link to study:
10.0.5.91/journal.pbio...

Co-authors:
@lucymaplin.bsky.social
@galarconnieto.bsky.social

6 months ago 68 25 2 1
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#bowerbirds are the only birds that build structures used specifically for courtship. But why and how did this remarkable ability evolve?

We discuss some possibilities in our new review in Emu - Austral Ornithology!

@fusanilab.bsky.social

doi.org/10.1080/0158...

6 months ago 19 7 1 0
Group photo of postdocs conducting research at a Max Planck Institute

Group photo of postdocs conducting research at a Max Planck Institute

The #MaxPlanckPostdocProgram offers a guaranteed contract of at least 3 years, targeted mentoring, and career workshops. The call for applications is open now! 🚀 Take advantage of this opportunity and browse the job vacancies. www.mpg.de/en/max-planc...

7 months ago 113 99 2 3
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New paper on precise tool use learning in carrion crows @currentbiology.bsky.social. We show that—like New Caledonian crows—expert carrion crows pay close attention to the working end of their tool, suggesting tool integration into their peripersonal space. 🧵 & vids! 👇

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

7 months ago 211 76 2 8
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Between-group competitive advantage offsets foraging costs for bigger groups in harsher seasons Larger animal groups are widely understood to require more space and travel farther to mitigate the foraging costs of within-group competition. Yet, between-group interactions and shifting resource di...

New paper from my group led by Odd Jacobson, former PhD student & current postdoc @livingingroups.bsky.social : How do animal groups simultaneously balance between- and within-group competition in dynamic environments and does this impact movement and space use? www.biorxiv.org/content/10.1...

8 months ago 19 8 1 1
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The Em Dash Responds to the AI Allegations “In recent months, a curious fixation has emerged in corners of academia: the em dash. More specifically, the apparent moral panic around how it is...

As an inveterate em-dash user, I loved this. www.mcsweeneys.net/articles/the...

9 months ago 19 4 0 0
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Anthropocentric bias may explain research disparities between animal tool use and nest building Scientists are not immune from bias. Studying nonhuman species objectively is inherently challenging, especially for ‘charismatic’ and ostensibly huma…

“the widespread appeal of animal tool use is partly due to anthropocentrism”

👍 for this new comparison of how animal tools and nests are talked about, from Sally Street et al.

The need to slap a human-like ‘intelligence’ label on animals is a symptom of this bias (writing a book on that now) 🧪🪹🔨

9 months ago 46 10 2 1
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🚀Join our team @tuda.bsky.social ! 🚀
I'm looking for 3 PhDs & 1 Postdoc for my @erc.europa.eu project “C4: Compositional Compression in Cognition and Culture” to study learning across individuals, teams, and cultural timescales
👉 PhD: hmc-lab.com/ERC_PhDs.html
👉 Postdoc: hmc-lab.com/ERC_Postdoc....

10 months ago 81 53 2 4
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GitHub - alexisbreen/Dynamic-nest-building: Reproducible repository Reproducible repository . Contribute to alexisbreen/Dynamic-nest-building development by creating an account on GitHub.

And here’s ours -- fully reproducible code and materials:

🔗 github.com/alexisbreen/...

9/9

10 months ago 1 0 0 0
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GitHub - bjbarrett/panama1: rstan code, graphing code, data simulations, and data for the first panama paper rstan code, graphing code, data simulations, and data for the first panama paper - bjbarrett/panama1

More great EWA modelling repos worth a shout-out:

🐒 @bjjbarrett.bsky.social et al. (capuchins):
🔗 github.com/bjbarrett/pa...

🐍 @mchimento.bsky.social et al. (Python-based theory):
🔗 github.com/michaelchime...

🧵8/n

10 months ago 3 0 1 0
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GitHub - DominikDeffner/Dynamic-Social-Learning Contribute to DominikDeffner/Dynamic-Social-Learning development by creating an account on GitHub.

Not a co-author, but a major influence -- big thanks to @dominikdeffner.bsky.social et al., whose prior modelling work and shared GitHub repo were foundational to this study:

🔗 github.com/DominikDeffn...

🧵7/n

10 months ago 2 0 1 0

Huge thanks to all co-authors (T. Eckersley, A. Camacho-Alpízar, C. Lambert, G. Balasubramanian, S. Healy, @rmcelreath.bsky.social, @laurenguillette.bsky.social), with extra thanks to @laurenguillette.bsky.social and @rmcelreath.bsky.social sky.social for encouraging this passion project 🙏

6/n

10 months ago 1 1 1 0

Overall, our study shows how computational modelling can link observed behaviour to hidden cognitive mechanisms, and probe their generalisability -- we hope this encourages wider use of these approaches in animal cognition research! 🌐📝⚙️🧠

🧵5/n

10 months ago 1 0 1 0
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Using cognitive model estimates, we ran simulations where material rewards varied. Payoff structure -- not (dis)satisfaction -- drove social material choice. But bigger rewards didn’t mean more copying. So, preliminary insights into how material-use strategies may generalise e.g., in tool use.

🧵4/n

10 months ago 1 0 1 0
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We link males' material choices to two asocial and two social latent learning parameters -- their decisions are dynamic! -- to provide the first formal mechanistic evidence for the cognitive basis of birds’ nest building ⚙️🧠

🧵3/n

10 months ago 4 0 1 0
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Zebbie nest-builders seem to *copy-if-dissatisfied* with prior material-experience, particularly at 1st choice -- this suggests they recognise the utility of social information.

🧵2/n

10 months ago 2 0 1 0
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Dynamic strategic social learning in nest-building zebra finches and its generalisability Animals often balance asocial and social information strategically, adjusting when and from whom they copy based on context. Yet the cognition driving this dynamic—and its broader implications—remains...

👇 New #preprint combining computational models with zebbie data: "Dynamic strategic social learning in nest-building zebra finches and its generalisability".

🔗 doi.org/10.1101/2025...

🧵1/n

10 months ago 16 9 1 1
Picture of Dr. Annika working on her computer

Picture of Dr. Annika working on her computer

Today, we're thrilled to announce two of our incredible speakers for the #SoapboxScience Berlin 2025 event.

First up is Dr Annika Tjuka ✨
@annikatjuka.bsky.social

10 months ago 8 4 1 0
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Tool use aids prey-fishing in a specialist predator of stingless bees | PNAS Tool use is widely reported across a broad range of the animal kingdom, yet comprehensive empirical tests of its function and evolutionary drivers ...

Tool use in insects: Assassin bugs apply resin to their forelegs before a stingless bee hunt. This makes the bees attack the bug in just the right position to be caught!

Videos will worth watching

www.pnas.org/doi/full/10....

11 months ago 198 84 5 6
APA PsycNet

1/n 🆕📄: How do children learn to adapt to different environments when making repeated choices? And what do cognitive immaturity and probability matching have to do with it? Our new article explores how kids & adults differ in probability learning across statistical task structures: mpib.berlin/R3RFy

1 year ago 19 11 1 2