Luca Hahn

The first papers from our special collection on vocal communication in corvids are now live. Most are still under review, stay tuned for more updates as they’re published! link.springer.com/collections/...

Pinyon Jays (Gymnorhinus cyanocephalus) and Clark’s nutcrackers (Nucifraga columbiana) can discriminate between pilfering and non-pilfering conspecifics, but not between heterospecifics - Animal Cogni... When foraging, individuals often need to assess potential risk from competitors. Within many food-caching (food-storing) species, individuals can modify their caching behavior depending on whether oth...

Late to the party but the last paper of my PhD was published earlier this year!
Pinyon jays (Gymnorhinus cyanocephalus) and Clark’s nutcrackers (Nucifraga columbiana) can discriminate between pilfering and non-pilfering conspecifics, but not between heterospecifics link.springer.com/article/10.1...

Join us!!! 2 (!) PhD positions on wild chimpanzees and bonobos in the Ape Behaviour & Ecology Group and Wildminds Lab!!! 🤩🤩🤩

NEW PAPER🎺
How does cognition determine an individual’s fitness? A systematic review of the links between cognition, behaviour and fitness in non-human animals

Lots of studies try to explain how cognition might evolve, by taking a behavioural ecology approach

Has this approach made any progress?🧵

Tolerant and despotic macaques show divergent temperament but similar theory of mind | Philosophical Transactions of the Royal Society B: Biological Sciences The social intelligence hypothesis proposes that the demands of social life shape the evolution of cognition, but different aspects of social interactions may be relevant. To test how competitive vers...

Check out our new paper comparing #socialcognition in #tolerant and #despotic #macaques, by @awad-schwob.bsky.social, Rosie Bettle, Megan Mulhinch & @zeppypearl.bsky.social!

royalsocietypublishing.org/doi/full/10....

Philosophical Transactions of the Royal Society B: Biological Sciences: Vol 380, No 1929 Can't sign in? Forgot your password?

Part of the Phil Trans special issue "Selection Shapes Diverse Animal Minds", edited with @ellileadbeater.bsky.social.

Thanks to co-authors Andoni Sergiou, @josharbon.bsky.social, @inesfuertbauer.bsky.social & @shoalgroup.bsky.social and all the special issue contributors.

tinyurl.com/35mn84ty

The coevolution of cognition and sociality | Philosophical Transactions of the Royal Society B: Biological Sciences Cognition serves to resolve uncertainty. Living in social groups is widely seen as a source of uncertainty driving cognitive evolution, but sociality can also mitigate sources of uncertainty, reducing...

Societies might shape minds, but minds can shape societies. In this new paper we discuss how this feedback changes how we think about social and cognitive evolution. Led by @lucahahn.bsky.social

royalsocietypublishing.org/doi/10.1098/...

Our paper is part of a fantastic special issue on how selection shapes animal minds, published now in Philosophical Transactions Royal Society B (link: royalsocietypublishing.org/toc/rstb/202...).

In our new paper we discuss the coevolution of cognition and sociality (link: royalsocietypublishing.org/doi/10.1098/...). It was a pleasure to work on this project with Andoni Sergiou, @josharbon.bsky.social, @inesfuertbauer.bsky.social, @shoalgroup.bsky.social, and @cornishjackdaws.bsky.social!

Philosophical Transactions of the Royal Society B: Biological Sciences: Vol 380, No 1929

Selection Shapes Diverse Animal Minds: our special issue of @royalsocietypublishing.org Phil Trans B on the diverse evolutionary processes underlying cognitive evolution is out today. Thanks to all our contributors! royalsocietypublishing.org/toc/rstb/202...

Exciting to see this R package for bayesian NBDA models out!

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

Traditions of behaviour have been found to be passed on in numerous species of animals. Now, major #conservation agencies have begun to recognize that these discoveries could have big implications for conservation agendas. Explore the new #PhilTransB issue: royalsocietypublishing.org/toc/rstb/202...

The flexibility of social learning and its conservation implications in mammals and beyond | Philosophical Transactions of the Royal Society B: Biological Sciences Conservation strategies seek to ensure that populations persist and are resilient to environmental change. As learning from others can shape the development of skills that help animals survive, reproduce and respond to changing conditions, understanding ...

The flexibility of social learning and its conservation implications in mammals & beyond.

New paper, led by Josh Arbon with fab collaborators Neil Jordan & @neeltjeboogert.bsky.social.

doi.org/10.1098/rstb.2024.0136

@uniexecec.bsky.social @bristolbiosci.bsky.social @royalsocietypublishing.org

Extinction of experience among ecologists Fieldwork-based research and education in ecology are under multiple threats and are progressively declining. We call for greater attention to this on…

Two extremely important articles

Why long-term field studies are rare: www.sciencedirect.com/science/arti...

And why field studies are important:
www.sciencedirect.com/science/arti...

BEHOLD THE FLAGSHIP PAPER OF MY PHD! 🚢 I trained wild and zoo housed Guinea baboons to pull a lever for peanuts to test whether they monitored the foraging skills of others and used the information to inform their social choices 🧵 (1/9) royalsocietypublishing.org/doi/10.1098/...

Applications for DISI extended to Monday, March 10th! Cannot recommend more - I've attended as a scientist and a storyteller and both experiences were transformative :)

📣 preprint klaxon: New study with @dalmaijer.bsky.social @barbaraklump.bsky.social @lucymaplin.bsky.social where we take a closer look at the innovation arms race between cockatoos and residents of Sydney doi.org/10.1101/2025...

Watch lectures from the best researchers. On-demand video platform giving you access to lectures from conferences worldwide.

For those who missed the @culturalevolsoc.bsky.social conference in Durham last September, the recorded talks are now freely available to watch here:

underline.io/events/456/l...

MacaqueNet: Advancing comparative behavioural research through large‐scale collaboration We present MacaqueNet, a global community of macaque researchers who developed the first publicly searchable, standardised database on affiliative and agonistic behaviour. This cross-species database...

So exciting to see MacaqueNet out into the world! 🤩

Learn about our global community & database centralizing standardized affiliative & agonistic data from 61 populations across 14 macaque species: doi/10.1111/1365...

Explore >600 networks & request data: macaquenet.github.io/database/

(9/9) Interested? We elaborate more on these ideas in this pre-print (osf.io/preprints/os...) which will be coming out soon in Phil Trans R Soc B.

(8/9) Why don’t we see a straightforward link between pair-bond strength and reproductive success? We suggest there may be important trade-offs between investing in long-term relationships, such as pair bonds, and maximising the benefits of interacting with others in the wider social network.

(7/9) Strongly bonded pairs were better able to coordinate hatching of their clutch to environmental conditions, but did not produce more or heavier fledglings. Maintaining strong pair bonds may facilitate coordination, but contrary to predictions there was no evidence for a direct adaptive value.

(6/9) Males in strongly bonded pairs responded more strongly to their partner’s distress. This finding could reflect variation in cognitive abilities to track and respond to subtle social information, as proposed by the Social Intelligence Hypothesis.

(5/9) Pair-bond strength (i) varied between pairs and (ii) was stable over time within pairs. This supports the assumption that if variation in pair-bond strength is driven by variation in underlying cognitive abilities, then these traits may come under selection.

(4/9) We tested key assumptions of this argument in wild jackdaws, members of the crow family, by combining observations of affiliative behaviour, experimental data on males’ responses to their partner's distress, as well as long-term breeding records to quantify reproductive outcomes.

(3/9) A version of this hypothesis postulates that long-term pair bonds in monogamous birds, such as parrots and corvids, pose substantial cognitive demands. This could be because partners may need to track information to anticipate and respond to each other’s behaviour, e.g. during biparental care.

(2/9) The need to maintain strong relationships and respond to social partners is assumed to drive cognitive evolution. This idea, known as the Social Intelligence Hypothesis, has been popular for decades but is still debated.

(1/9) Our new paper "Pair-bond strength is consistent and related to partner responsiveness in a wild corvid" is now out in Proc R Soc B! Research together with Beki Hooper, @guillmcivor.bsky.social, and @cornishjackdaws.bsky.social Link: royalsocietypublishing.org/doi/10.1098/...

New paper in #ProcB with @alexmesoudi.com, @jfbonnefon.bsky.social, @rmcelreath.bsky.social and Rob Boyd.

We investigate how social learning shapes the way we explore and show that it can even preserve useless theories! 🧵👇