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Izzie Héjja-B.

@izziehb.bsky.social
1.1K followers 475 following 89 posts

Postdoc @klivvvienna.bsky.social & @univie.ac.at with 🐦🪶 & 🐠 🔎 Behavioural ecology + cognitive neuroscience + sexual selection + ML Learning to engage in/promote a better science: open-inclusive-accessible; slow. yseulthb.github.io

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Izzie Héjja-B. @izziehb.bsky.social · 12/10/2026
🗓️ Save the date for our movie screening! ✨🎬 Come and discover Second Nature, a great docu highlighting queerness in nature narrated by Elliot Page, & have a chat with our panelists! Trailer below 🔽 PS: If you're planning on coming, you can already register here: forms.cloud.microsoft/e/VfxDwC3Rfe
youtu.be
Second Nature - Official Trailer
YouTube video by Second Nature
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Izzie Héjja-B. @izziehb.bsky.social · 12/10/2026
If you feel like joining us, you can register here: forms.cloud.microsoft/e/VfxDwC3Rfe This will help us plan food quantity and ensure we can fit everyone 😊
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Izzie Héjja-B. @izziehb.bsky.social · 29/09/2026
Thanks for sharing its journey, Kara! I've enjoyed it a lot! 🤩
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Robin Hayward 🌳 🏳️‍⚧️ @canopyrobin.com · 25/09/2026
We're publishing new guidance to support trans people who do fieldwork (any work outside the office)! Now we need your help to get them seen so please share! inclusivefieldwork.leeds.ac.uk/trans/
a cartoon of three fieldworkers. One has a small trans flag. The logos of the university of leeds, research england, and canopy robin are shown, as well as the URL: InclusiveFieldwork (dot) Leeds (dot) AC (dot) UK (slash) trans
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Richard Lenski @relenski.bsky.social · 22/09/2026
"Philosophy of Biology: The power of theory in the life sciences" elifesciences.org/articles/112... @zdblount.bsky.social shared this thought-provoking paper with the lab group.
elifesciences.org
Philosophy of Biology: The power of theory in the life sciences
Theory can help address cell and molecular biology’s major challenges, particularly those arising from large omics datasets.
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EvoBio Crash Course @evobiocc.bsky.social · 23/09/2026
The Evobio Crash Course is coming back for its fifth edition! Join us from December 7 to December 18 for an incredible line up of classes and tutorials from amazing researchers in the field! The course is open to all, completely free and held online. Registration is OPEN, please share widely!
Poster for the Evobio Crash Course. Online from December 7-18, 2026.
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Grace Lindsay @neurograce.bsky.social · 27/08/2026
MIT has put out an "AI and Education" report summarizing what they've found at their own institution. Seems thoughtful. aiandeducation.mit.edu/report/
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Thomas MacGillavry @thomasmacgillavry.bsky.social · 01/09/2026
Another preprint with Amy Carboon and John Endler on light microhabitat use in Victoria’s riflebird using hemispheric canopy photography, display activity data, and sun track simulations. In short, males display in the VERY early morning under dim light. ecoevorxiv.org/repository/v...
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Dax Kellie @daxkellie.bsky.social · 19/08/2026
And check out this scrolly-telling article that highlights some of the data stories in the painting! 👀 labs.ala.org.au/stories/stor... (made using Quarto + {closeread}) #rstats 🧪🌏📊 #NationalScienceWeek #quartopub
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Timnit Gebru @timnitgebru.blacksky.app · 13/08/2026
🔇 🔇 🔇 My book, Deep Unlearning, is now available for preorders! I don't know how people write so many books because this one took a lot out of me. It turns out, I had a lot to say 😂, with editors cutting out 50k of my words 🫣 ✴️ You can now preorder it at www.simonandschuster.com/books/Deep-U....
Cover of my new book, Deep Unlearning: The Rise of AI and The Radicalization of a Tech Idealist. 

There are two concentric circles in the book, the left being circuits in black an white, and the right being a bunch of dots with orange accents. The cover background is cream. And the words are written in black except for "Un" which is in orange.
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Andrés Cuervo @amcuervo.bsky.social · 26/08/2026
It's 2026, and you still carry that parachute? Key practices for ethical research during scientific expeditions. By @nelsyninor.bsky.social et al. in @conservationsp.bsky.social @society4conbio.bsky.social conbio.onlinelibrary.wiley.com/doi/10.1111/... #expeditions #science #museums
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Hanna Kokko @kokkonut.bsky.social · 26/08/2026
Come and work with us (the Kokkonuts) as a postdoc! Our research within (theory-evo-eco) is broad; let's say it's implicitly defined by the journal club papers we read. Which is why the application process includes a JC-related task, I hope it'll be a fun one for you! www.evoldir.net/brian/evoldi...
evoldir.net
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
of the environment. As a consequence, patterns mimicking those statistics will be efficiently processed and could thus be attractive. This could influence the direction of sexual signal evolution towards including a background-matching component. See our discussion for more about this! The End. ✨
Illustration of the evolution from background matching to sexual signalling through the exploitation of processing bias. 1: Natural selection due to predation generally results in inconspicuous phenotypes. Phenotypes with a pattern that matches that of the environment (‘inconspicuous pattern’) are well camouflaged and thus gradually increase in frequency in the population. Such phenotypes typically do not elicit strong preferences among conspecifics because of their low detectability. 2: Any new mutation increasing conspicuousness should be negatively selected by predation (low survival). However, because they are highly detectable by potential mates and thus reduce their cost of mating, or if they enhance sexual arousal, these phenotypes are potentially attractive. Among conspicuous phenotypes, background-matching patterns that match the visual structure of the habitat (‘conspicuously patterned’) should be preferred (ΔP) over those that do not (‘conspicuously plain’) because they are even more efficiently processed. In this study, we have provided the first empirical evidence supporting this prediction. 3: These ‘conspicuous patterns’ would remain negatively selected by natural selection until a change in ecological factors (e.g. colonisation of habitats or regions with fewer predators, the appearance of new, alternative prey, predators' focus on new sensory cues) makes sexual selection strong enough to counteract the effects of predation on phenotype evolution. 4: Thus, conspicuous phenotypes that have evolved from background-matching patterns can be evolutionarily co-opted by sexual selection.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
Given known similarities in visual systems and information processing of primates, rodents, or birds, we expect other species to have similar preferences. ▶️ If preferences originate as pre-existing perceptual biases for background-matching patterns, signals can be shaped by the spatial statistics
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
To sum up: we found an absolute preference for patterns with the average Fourier slope of natural scenes but we also showed that this preference can be modified by the visual statistics of the background against which a stimulus is displayed.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
For background-matching stimuli, we found that preferences peaked at different values depending on the Fourier slope of the background. The peak was actually shifted away from the average Fourier slope of natural scenes towards the background value. See the article for a more detailed description.
Image of the results for the task with a noisy or patterned background. There are two sections: top one shows examples of the stimuli. Bottom section shows the preference results for the different backgrounds.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
We found an absolute preference for stimuli whose Fourier slope corresponds to the average one found in natural scenes (task with gray background), which is aligned with the general finding that people prefer images with the Fourier slope of natural scenes (low level processing, likely 'universal').
Results for the task with the gray background. Results are given as Elo rankings for the two-alternative forced-choice task with a grey background. Each condition (i.e. target slope value) is represented by five closed circles (made more visible using jittering) corresponding to five different stimuli versions. Dots indicate the mean ranking values for each of the five stimuli versions of each condition (indicated on the X axis). Box plots give the variability of preference scores across those versions. The central line in each box plot indicates the median, the hinges the 25th and 75th percentiles, and the upper (lower) whiskers extend from the hinge to the largest (smallest) value no further than 1.5× interquartile range (distance between the first and third quartiles) from the hinge. The dotted line indicates a quadratic fit of the data, with a preference peak for a target slope of -2.36.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
or it was "noisy" or "patterned", measuring the effective preference for background-matching stimuli. In each case, we manipulated the spatial statistics distribution of our stimuli by modifying their Fourier slope, making them look +/- coarse. This is known to influence visual preferences.
An example of stimulus presented. Two circular targets are presented against a patterned background. Targets are circled with a thick black line and vary in their internal content, which is a scramble of white and black pixels. They look like more or less coarse patterns. Participants are asked to compare the patterns and indicate which one they prefer.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
After successfully playing with the level of camouflage of our stimuli, participants were randomly assigned 1 of 2 tasks and asked to indicate their preferred image. ⚠️Stimuli were made detectable. The background was either gray, measuring the absolute preference for our different stimulus patterns
An example of stimulus presented. Two circular targets are presented against a grey background. Targets are circled with a thick black line and vary in their internal content, which is a scramble of white and black pixels. They look like more or less coarse patterns. Participants are asked to compare the patterns and indicate which one they prefer.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
as we used our networks' mailing-lists, in majority based in Western countries. This is also aligned with the participants' background of many studies looking at our preferences for natural statistics. Still a lot of efforts to make for broadening those results!
nature.com
Most people are not WEIRD - Nature
To understand human psychology, behavioural scientists must stop doing most of their experiments on Westerners, argue Joseph Henrich, Steven J. Heine and Ara Norenzayan.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
We kindly asked humans worldwide to take part in our online experiment. This proved more challenging to recruit enough participants but eventually we could analyse the data of 1757 participants (out of the 2567 participations recorded = 68.6%)​. Our population is mostly WEIRD, which we expected,
World map where colours show the number of participants per country. We mostly have participants based in France and in the US.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
If we do have preferences for background matching that are aligned with a processing bias, this could be another route for signal evolution. An important aspect is that those preferences appear after the stimulus is detected. 🔎 We first had to create abstract stimuli and assess their camouflageness.
Example of one of our stimuli to measure the detectability of background-matching. The participant is asked to click on the target as fast as possible. The stimulus is made of white noise, which looks like scrambled black and white pixels. Somewhere in this noise, there is a circular target with a slightly different pixel scrambling. Depending on the conditions, those targets are more or less easy to spot.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
One very strong example of matching the visual characteristics of natural scenes is background-matching camouflage. Could it be then that we also like images of background-matching, and if so, do we have a stronger preference for the best background-matching stimulus? That's our research question!
Paper cut in the shape of a human head and in the middle of it, another cut has the shape of a puzzle piece.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
We know that people prefer images that match the spatial statistics of natural scenes, likely because the brain has evolved/develops to process them efficiently. Julien and Tamra have proposed that such a processing bias could explain the evolution of sexual signal preferences in other species.
The picture shows a prairie landscape, very green with a shallow river flowing. In the back, we can see a mountain range with the tops covered with snow. The light is luminous and the picture can be described as appeasing.
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Izzie Héjja-B. @izziehb.bsky.social · 27/08/2026
🚨New paper out after several years in the making! "Background-matching patterns are attractive: support for a processing bias" with @tamramendelson.bsky.social, @julien-renoult.bsky.social, Innes Cuthill (CamoLab alumni), Michel Raymond (@isemevol.bsky.social) ▶️ doi.org/10.1016/j.an... 📷 Ed Nisley
Gray tree frog on concrete. It is well camouflaged and not so easy to see.
Photo credit: Ed Nisley’s Blog [https://softsolder.com/] ©2025 by Ed Nisley is licensed under CC Attribution-NonCommercial-ShareAlike 4.0 International
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Izzie Héjja-B. @izziehb.bsky.social · 26/08/2026
🚨Need help to report bullying in academia? Check out this precious resource made by @mlforall.bsky.social > A map of independent national organisations across Europe: research-integrity bodies, academic unions, whistleblower-protection authorities, or legal aid: dictionaryofml.org/fight-the-ac...
Screenshot of what the website looks like. It depicts a map of Europe with countries greyed out when organisations to help you report bullying practices are present. Four types of organisations are mentioned: research-integrity body, union and staff representation, whistleblower protection, and anti-mobbing and legal aid.
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Casey Dunn @caseywdunn.bsky.social · 25/08/2026
My new book, Phylogenetic Biology, is now published. Available online for free at dunnlab.org/phylogenetic... . Physical copies can be purchased at shop.lightningsource.com/b/085?params... or your favorite bookstore.
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Lauren Sumner-Rooney @laurensr.bsky.social · 10/08/2026
Two weeks left to apply for our postdoc position on vision in trilobites! Come and explore the exciting world of reconstructing vision in the fossil record, using some of the most iconic extinct animals to grace our oceans! Please reach out + RT! (*Deadline in fact 23.59 BST on the 26th August!*)
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Izzie Héjja-B. @izziehb.bsky.social · 10/08/2026
@bricebeffara.bsky.social maybe you're nearby or know someone who is?
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Serene Doomer @serenaribena.bsky.social · 04/08/2026
'The consequences are becoming increasingly tangible. During June’s heatwave, the Danube Reg'l Waterworks warned that unless h'holds immediately reduced consumption, “water supply network could completely implode” — potentially disrupting supplies across central Hungary.' www.ft.com/content/1dc7...
ft.com
In Hungary, a wetland paradise lost
Climate change is drying out a European nation long celebrated for rivers, lakes and fertile fields
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Gerry Carter @gerrycarter.bsky.social · 31/07/2026
Job posting: Associate Professor in behavioral ecology and cultural evolution within the Department of Ecology and Evolution (DEE) at the University of Lausanne. Deadline for applications is 30.09.2026: wwwfbm.unil.ch/releve/appli... (there is a button to switch to English at the top right)
wwwfbm.unil.ch
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Hanna Kokko @kokkonut.bsky.social · 30/07/2026
.The very talented and fun Jonathan Henshaw has two positions to offer! If you like theoretical eco-evo questions, don't hesitate. Also, Freiburg is a very pretty place PhD: uni-freiburg.de/stellenangeb... Postdoc: uni-freiburg.de/stellenangeb...
uni-freiburg.de
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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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Quentin Bacquelé @quentinbacquele.bsky.social · 23/07/2026
1/ The world's songbirds sing in just 8 basic sounds. And where a bird lives decides which ones it uses. My first PhD paper is out now in @science.org (www.science.org/doi/10.1126/science.aee6239) Here is what we found:
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Izzie Héjja-B. @izziehb.bsky.social · 21/07/2026
And for people at #ISBE2026, I'll be presenting our study on Friday at 1 pm, room 500. We're happy to hear your thoughts and to show pictures of those beautiful birds!
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SORTEE @sortee.bsky.social · 16/07/2026
SORTEE is coming to #ISBE2026! 🎉 📢 Learn about open science at our presentation (Monday, July 20, 14:00–14:40) 🎲 Chat with our volunteers, test your knowledge with open science quizzes and games, and enter our prize draw at the SORTEE stall (all conference)
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🇨🇦JOY 🇨🇦 @joycomes.bsky.social · 17/07/2026
Wayne Williams highly acclaimed award winning photo of Crested Caracara x Scissor-tailed Flycatcher ! The brave little fly catcher is dive-bombing the much larger Caracara!
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Izzie Héjja-B. @izziehb.bsky.social · 16/07/2026
We're a bunch from Uni Wien and Vetmeduni to be joining ISBE! Calling attention to this for interested colleagues 😊
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Zebrafish Disease Models Society (ZDMS) @zdmsociety.bsky.social · 10/07/2026
🚨 There's ~3 weeks left to submit your creative works for our first fishy #SciArt competition! 🐟🎨📽️ You choose the medium (e.g. illustration or short video) & ZDMS supply the cash (as judged by our expert panel) 🤩 👉 For more guidelines & submission details, visit: www.zdmsociety.org/sci-art-comp...
Poster announcing ZDMS SciArt Competition. The ZDMS logo is in the top left. Text reads “ZDMS presents SciArt Competition 2026. Prizes 1st $300 / 2nd $150 / 3rd $50. Accepting illustrations or short film formats. Submission deadline: August 1, 2026. The background is a watercolor of an underwater scene depicting a zebrafish. Credit artwork to Yuval Segal.
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Dr Alex Evans 𓅫 @avianevans.bsky.social · 03/07/2026
1 week since we launched Living Biology, the @sebiology.bsky.social Podcast! I'm thrilled that so many people have listened to the first two episodes, and very proud to have shared some wonderfully inspiring stories from Declan Perry and Lucy Hawkes about their lives in science. Happy listening!
open.spotify.com
Living Biology
Podcast · The Society for Experimental Biology · Living Biology is the official podcast of the Society for Experimental Biology, exploring the people, ideas, and discoveries driving modern biological...
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Bob Wong @bbmwong.bsky.social · 10/07/2026
Do you have a background in behavioural ecology and are you interested in doing a PhD in Australia? I’m looking for new grad students so check out our website (BobWongLab.org) or come find me in Torino at #ISBE2026. 🐟🐠
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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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Izzie Héjja-B. @izziehb.bsky.social · 09/07/2026
🚨Check this neat initiative! ✨ And for online attendance: "No need to register to participate online. The link for online participation will be shared on this page." 👀 #AnimalBehaviour #Philosophy
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SORTEE @sortee.bsky.social · 06/07/2026
Dr Rachel Heyard joins us from the Centre for Reproducible Science and Research Synthesis in Zurich to discuss funding lotteries and other innovations in research funding allocation on July 7th. Register here: events.humanitix.com/webinar-lott...
events.humanitix.com
SORTEE Webinar: Lotteries and innovations in research funding allocation
SORTEE Workshop & Webinar Series
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Miguel Clavero @chikichanka.bsky.social · 30/06/2026
Natural history on canvas: Brueghel knew about bird-eating noctule bats Just published in @pnas.org, OA for all eyes Led by the one-and-only @romero-vidal.bsky.social, with the amazing @elena-tena.bsky.social and Sonia Sánchez-Navarro @ebdonana.bsky.social LINK: www.pnas.org/doi/10.1073/...
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Robert Fletcher @fletcherecology.bsky.social · 26/06/2026
Really interesting take on the future of ecology in an AI world. The take home: experiments and long-term studies will have increasing value. @jdrakephd.bsky.social onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
AI, Comparative Advantage, and the Next Decade of Ecological Research
Click on the article title to read more.
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James Bullock @jmbecologist.bsky.social · 22/04/2026
Call me old-fashioned, but I always look at a paper before I cite it www.nature.com/articles/d41...
nature.com
Hallucinated citations are polluting the scientific literature. What can be done?
Tens of thousands of publications from 2025 might include invalid references generated by AI, a Nature analysis suggests.
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Trends in Cognitive Sciences @cp-trendscognsci.bsky.social · 17/06/2026
Online Now: Timescapes of non-human experience
dlvr.it
Timescapes of non-human experience
How can we investigate non-human experiences scientifically? Given substantial differences in sensory abilities and the private nature of consciousness, this remains an open question. In this review, we propose a way to gain empirical traction on one key feature of experience: its temporal structure, or ‘timescape’. Perceptual contents follow systematic temporal principles—synchronisation, revision, and persistence—and are sampled across attentional windows and vary in stability. These principles can be explored through temporal illusions and experimental paradigms. We conceptualise an animal’s timescape in terms of five key windows, all of which are experimentally testable, and analyse evidence across animal species to highlight varying timescapes. Together, these ideas lay the foundations for a research programme comparing the temporal Umwelts of non-human animals.
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Danai Papageorgiou @danaipapageorgiou.bsky.social · 15/06/2026
🎓📢 PhD Alert 🎓📢 Three weeks left to apply for the PhD position on maintaining the balance of power in animal societies! www.hu-berlin.de/en/universit... @animalopps.bsky.social
hu-berlin.de
Making sure you're not a bot!
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Jitka Polechová @polejit.bsky.social · 12/06/2026
Are you looking for a PhD on the intersection between evolutionary and ecological theory? Join us @univie. Fully funded PhD position in fundamental eco-evolutionary theory, open to international students. Apply by 13.7.2026: ecoevo.owlstown.net/search Reposting appreciated. #evolbio #evoeco #ecology
ecoevo.owlstown.net
Jitka's EcoEvo Lab - Jobs
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