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Szymek Drobniak

@szymekdr.bsky.social
464 followers 256 following 84 posts

evolution & ecology: colour, quant gen, meta-analysis, biostatistics | designer | writer+poet | R | sci comm+sciart | analog photography | birds 🦆🦉||UNSW Sydney & JU Kraków | he/him 🏳️‍🌈🇪🇺🇵🇱🇦🇺 szymekdr.wordpress.com Pubs: bit.ly/SzymekDrScholar

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Reposted by Szymek Drobniak
David López-Idiáquez @davididiaquez.bsky.social · 10/09/2026
Our pre-print analysing the 1 std decline in mass in Wytham great tits has just been published in @animalecology.bsky.social check it out: besjournals.onlinelibrary.wiley.com/doi/10.1111/... @biology.ox.ac.uk
besjournals.onlinelibrary.wiley.com
Early‐life environment drives long‐term decrease in adult body mass in a wild bird population
Using more than 90,000 body mass measures of adult and nestling great tits Parus major, we show that the 1 SD decline in adult mass between 1978 and 2024 is a consequence of changes in the environmen....
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Szymek Drobniak @szymekdr.bsky.social · 10/09/2026
So we propose AIdIT — AI disclosure for Improved Transparency: a CRediT-like framework recording where and how AI was used, which tools were involved, and how their outputs were checked by humans. The goal isn’t to police AI use. It’s to make it transparent and reproducible.
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Szymek Drobniak @szymekdr.bsky.social · 10/09/2026
This matters because “AI use” can mean very different things: polishing language, finding literature, generating code, analysing data, developing methods, creating figures… Simply asking authors “Did you use AI?” tells us very little about how the research was actually produced.
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Szymek Drobniak @szymekdr.bsky.social · 10/09/2026
Nearly half of the journals we surveyed had no guidance on AI use at all. And where policies existed, they were often generic, publisher-driven and focused on restrictions rather than practical guidance. Meanwhile, fewer than 6% of papers contained an explicit AI disclosure.
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Szymek Drobniak @szymekdr.bsky.social · 10/09/2026
Gen. AI is rapidly becoming part of scientific work. But are we honest about how we use it? We screened 230 eco & evo journals & >2200 recent papers. The answer: nope. Our paper maps the problem & offers a solution. link.springer.com/article/10.1... @jagiellonskiuni.bsky.social @ioes-ju.bsky.social
link.springer.com
A systematic map of generative AI guidelines and reporting in ecology and evolutionary biology: towards the framework of AI disclosure for Improved Transparency (AIdIT) - Research Integrity and Peer R...
Generative artificial intelligence (AI) is rapidly becoming embedded across scientific workflows, yet mechanisms for transparently documenting its use remain fragmented and weakly enforced. Focusing o...
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Reposted by Szymek Drobniak
Hej Blåmes! Gotland's long-term bird monitoring @hejblames.bsky.social · 07/06/2026
in the winter. Flycatchers seem to have taken advantage of reduced competition as also great tits noted a30-40% drop in breeding pairs (100 pairs more of the collared flycatcher). Let’s hope it was just a fluctuation and significantly colder winter… last pic - a ringed tree pipit found in our plot;)
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Reposted by Szymek Drobniak
Hej Blåmes! Gotland's long-term bird monitoring @hejblames.bsky.social · 07/06/2026
The number of breeding BT pairs dropped by 50% (sic! ~90-100 broods fewer!) Many broods are clearly attended by 1 parent, and we’ve noted almost a 100% drop in the number of recruits (1-2% of recruited 2nd yrs instead of the usual 20-30%). Our Swedish friends also reported almost no BTs in feeders
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Hej Blåmes! Gotland's long-term bird monitoring @hejblames.bsky.social · 07/06/2026
Day 68 of the 47th # Gotland season! After some May showers Gotland returned with dazzling sunny weather :) first flycatchers started to hatch, but this years weird. The blue tit population was hit hard by blåmessjuka („blue tit disease”) caused by Corynebacteria - Suttonella ornithocola.
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Szymek Drobniak @szymekdr.bsky.social · 19/05/2026
@ioes-ju.bsky.social
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Szymek Drobniak @szymekdr.bsky.social · 19/05/2026
@ioes-ju.bsky.social
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Reposted by Szymek Drobniak
Hej Blåmes! Gotland's long-term bird monitoring @hejblames.bsky.social · 22/04/2026
only a few dozen starting nests and only 1 with eggs!) This year we continue with the behavioral experiment on blue tits - testing their choice of feather decorations they add to their nests. Stay tuned for news and updates:)
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Hej Blåmes! Gotland's long-term bird monitoring @hejblames.bsky.social · 22/04/2026
Day 22 of the 26th Gotland season! We started on the 14th of April - it’s a surprisingly odd spring here in #Gotland. Exceptionally early arrivals of warblers (chiffchaff, willow warbler and blackcap already gear on the 18th) and exceptionally late for hole nesters (it’s past the 20th and we have
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Szymek Drobniak @szymekdr.bsky.social · 08/01/2026
Flying past Mars, slaloming through the asteroid belt, then frontally towards Jupiter. This is how I'd imagine a soundtrack for such a trip. www.youtube.com/watch?v=dIww...
youtube.com
Nils Frahm - Says (Official Music Video)
YouTube video by Erased Tapes
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Reposted by Szymek Drobniak
Ilya Kashnitsky @ikashnitsky.phd · 21/10/2025
Fantastic discussion lecture at @mpidr.bsky.social by @rmcelreath.bsky.social 😍 I cannot agree more with @ezagheni.bsky.social who introduced the guest as a true renaissance scientist of today 💎 Very thought provoking. I hope it will add to the collection of those "embarrassing" YouTube footage 🙃
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Nature Portfolio @natureportfolio.nature.com · 21/10/2025
A study in Nature reports that a transition from carbon sink to source for the aboveground woody biomass of moist tropical Australian forests has occurred, driven by increasingly extreme climate anomalies. go.nature.com/4ndWLmg ⚒️ 🧪
This is figure 3, which shows Queensland rainforest plot locations, long-term climate, and causal diagram of the hypotheses relating climate variations over time to ΔAGB.
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Reposted by Szymek Drobniak
Ben Sheldon @sheldonbirds.bsky.social · 17/10/2025
Wow! A paper on Wheatear plumage evolution in @science.org - unforeseen collision of interests here www.science.org/doi/10.1126/...
science.org
A mosaic of modular variation at a single gene underpins convergent plumage coloration
The reshuffling of genomic variation from multiple origins is an important contributor to phenotypic diversification, yet insights into the evolutionary trajectories of this combinatorial process and ...
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Szymek Drobniak @szymekdr.bsky.social · 15/10/2025
#sortee2025 conference is on! Excited to see all amazing talks :) sortee.org/upcoming/
sortee.org
Upcoming events
Upcoming conference by Society for Open, Reliable, and Transparent Ecology and Evolutionary biology (SORTEE)
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Szymek Drobniak @szymekdr.bsky.social · 11/10/2025
As always with priceless support from @jagiellonskiuni.bsky.social @ioes-ju.bsky.social @unsw.edu.au , with amazing @itchyshin.bsky.social and other non-bsky-ers ;)
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Szymek Drobniak @szymekdr.bsky.social · 11/10/2025
data structure (make sure your categorical data is sufficiently balanced and all categories are represented at the key intersection of predictors’ values); data complexity: collapse/merge levels if it’s reasonable to increase parameters identifiability.
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Szymek Drobniak @szymekdr.bsky.social · 11/10/2025
unordered ordinal. Categorical data pose many challenges but they are as tractable with comparative methods as more well-behaved Gaussian models. The most important issues to keep in mind are: data availability (attempting to fit multinomial models with small datasets may lead to spurious results);
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Szymek Drobniak @szymekdr.bsky.social · 11/10/2025
Continuing our series on difficult comparative models - and how to address them properly - we’re happy to showcase another study, this time in @jevbio.bsky.social academic.oup.com/jeb/advance-... We will guide you through a series of increasingly complex models, from binary, through ordered to
academic.oup.com
Promoting the use of phylogenetic multinomial generalised mixed-effects model to understand the evolution of discrete traits
Abstract. Phylogenetic comparative methods (PCMs) are fundamental tools for understanding trait evolution across species. While linear models are widely us
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Szymek Drobniak @szymekdr.bsky.social · 07/10/2025
2025 #NobelPrize in physics for macroscopic quantum tunnelling phenomena in electric circuits :) suiting for the year of the centennial anniversary of quantum physics!
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Szymek Drobniak @szymekdr.bsky.social · 05/10/2025
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Szymek Drobniak @szymekdr.bsky.social · 05/10/2025
Follow us (incl @itchyshin.bsky.social and other co-authors not yet on Bsky ;)) for more useful methodological tips applicable to synthetic data. With support of @unsw.edu.au @jagiellonskiuni.bsky.social @ioes-ju.bsky.social @ncn.gov.pl @ualberta.bsky.social )
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Szymek Drobniak @szymekdr.bsky.social · 05/10/2025
of heteroscedastic variance to meta-analytical heterogeneity can uncover hidden patterns in variability, including systematic trends in between-study variation. Stay tuned for our future papers where we will keep convincing y’all to adopting location-scale modelling as your default approach to data.
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Szymek Drobniak @szymekdr.bsky.social · 05/10/2025
Our recent paper looks at location-scale interfaces in comparative data. But predicting variance in variance extends much further - if you still have not have a look here onlinelibrary.wiley.com/doi/full/10.... (another recent paper in @globalchangebio.bsky.social). We show how extending the idea
onlinelibrary.wiley.com
Location‐Scale Meta‐Analysis and Meta‐Regression as a Tool to Capture Large‐Scale Changes in Biological and Methodological Heterogeneity: A Spotlight on Heteroscedasticity
Meta-analyses are widely used to understand how species and ecosystems respond to global change, but most assume that variability among studies is constant. This assumption can hide important biologi....
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Reposted by Szymek Drobniak
Richard McElreath 🐈‍⬛ @rmcelreath.bsky.social · 02/10/2025
Are we doing simulations wrong? This paper convinced me we are. doi.org/10.1098/rstb... Usually we run 2 sets of "worlds" w and w-out intervention. Gives large uncertainties that include negative (harm) effects of interventions that are actually always positive (beneficial)!
Figure 5. Time series showing cumulative number of cases averted at each time caused by the intervention calculated using our method (single-world) and a
standard method. Shaded regions denote 90% confidence intervals. Note that there is more variation in the middle of the epidemic, so it may seem as though the
number of cases averted is large during those times. (Online version in colour.)
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Reposted by Szymek Drobniak
Alice Roberts @profaliceroberts.bsky.social · 01/10/2025
I’m sad to hear the news that the wonderful Jane Goodall is no longer in the world. Her work with chimpanzees at Gombe in Tanzania taught us to look at other apes - and ourselves - differently. I was privileged to meet her later in life and tell her what an inspiration she was to me.
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Szymek Drobniak @szymekdr.bsky.social · 02/10/2025
As always with invaluable support from @unsw.edu.au @jagiellonskiuni.bsky.social @ioes-ju.bsky.social @ncn.gov.pl
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Szymek Drobniak @szymekdr.bsky.social · 02/10/2025
The models are notably more complex but fittable with modern Bayesian GLMM routines. Think of them as looking at mean and scale (usually variance) evolution along the tree, here in an example of two concurrent Brownian Motion dynamics driving diversification of both variance and means.
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Szymek Drobniak @szymekdr.bsky.social · 02/10/2025
By extending the comparative model we can assay the evolutionary signal in evolvability itself and test a number of biologically interesting trait configurations (codivergence, contra-divergence, ceiling effects, phenotypic integrations and more!)
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Szymek Drobniak @szymekdr.bsky.social · 02/10/2025
Our newest paper is out in Methods in Ecol Evol @methodsinecoevol.bsky.social :) amazing team effort - we show that the traditional way of analyzing comparative data lacks finesse. besjournals.onlinelibrary.wiley.com/action/oidcS... w/ @itchyshin.bsky.social Yefeng Yang, Losia Lagisz & Ayumi Mizuno
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Szymek Drobniak @szymekdr.bsky.social · 16/09/2025
#maltese geometry
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Szymek Drobniak @szymekdr.bsky.social · 14/09/2025
Unfolding the folded streets of La Valletta #Malta #holidays #relaxatlast
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Szymek Drobniak @szymekdr.bsky.social · 12/09/2025
I’ve recently had my Swarovski cleaned, adjusted and resleeved free of charge. I request the front lens covers almost yearly (their rubber attachments break easily) - wondering when they’ll lose patience…
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Reposted by Szymek Drobniak
Robert Vaughan @robertvaughani.bsky.social · 30/08/2025
I am just back from a wonderful few days in Sweden where I visited the incredible Lars Jonsson exhibition in Stockholm, and then his museum on Gotland. Absolutely mind blowing, the selection and range of work was just unbelievable!
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Szymek Drobniak @szymekdr.bsky.social · 29/08/2025
Our recent paper now live in Frontiers in Zoology @springernature.com - we show how climatic trends affect reproductive success of flycatchers in the Gotland population (nearing 50 yrs of continued monitoring ;)) link.springer.com/article/10.1... @ioes-ju.bsky.social @jagiellonskiuni.bsky.social
link.springer.com
The impact of weather conditions on avian breeding performance: insights from a long-term study - Frontiers in Zoology
Understanding how weather conditions during early development influence reproductive success is essential for predicting avian responses to climate change. We used a 40-year dataset from a nest-box po...
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Reposted by Szymek Drobniak
Institute of Environmental Sciences JU @ioes-ju.bsky.social · 25/08/2025
It's been a busy summer for our scientists. Several of them attended the #ESEB2025 conference in Barcelona.
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Erik Postma @erikpostma.bsky.social · 22/08/2025
With #eseb2025 coming to a close, it is time to start making plans for 2026. Interested in the interface of evolution 🧬 and ecology 🌳? Come to our #ExE conference hosted by @uniexecec.bsky.social in beautiful #Cornwall. Leave your email address at tinyurl.com/EvolxEcol to join our mailing list!
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Szymek Drobniak @szymekdr.bsky.social · 22/08/2025
like to contribute to a potential art&sci symposium at some next meeting (eseb or other) - let me know, I’m always happy to chat with art-inclined folk. Also don’t miss EvoKE conference in Athens! evokeproject.org/evoke2025-at... and join @evokeproject.bsky.social if outreach is ur thing;)
evokeproject.org
EvoKE2025 Athens 6th-8th November
Steve Swayne – File:O Partenon de Atenas.jpg, originally posted to Flickr as The Parthenon Athens It is our great pleasure to announce that the EvoKE2025 meeting will take place in Athens, Gr…
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Szymek Drobniak @szymekdr.bsky.social · 22/08/2025
I keep saying scientists are amazing artists and again this tuned out to be true :) the art corner at @eseb2025.bsky.social organised by @evokeproject.bsky.social went great, I’m thrilled to see all your amazing pieces! If you’re interested in discussing art&sci in science communication or would
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Szymek Drobniak @szymekdr.bsky.social · 19/08/2025
@eseb2025.bsky.social art corner goes well, it will be available throughout the conference. Join us, draw your science :) @evokeproject.bsky.social I get asked - what if I can’t draw? That’s even better! Trust me - your art will be more honest, and awesome. And we want to see it:)
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Szymek Drobniak @szymekdr.bsky.social · 19/08/2025
At @eseb2025.bsky.social please go and visit the art corner organised by @evokeproject.bsky.social (6th Eseb art&sci corner!:)) It’s in the far back-right of the poster area. You don’t have to be an artist! No prior art knowledge required ;) just go there & draw/paint whatever portrays your science!
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Szymek Drobniak @szymekdr.bsky.social · 17/08/2025
The art corner has been present at Eseb congresses since the 2015 Lausanne meeting, always receiving positive and lively feedback from all of you:) below some artworks from the Prague 2022 meeting. @eseb.bsky.social As always done with the amazing @evokeproject.bsky.social
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Szymek Drobniak @szymekdr.bsky.social · 17/08/2025
At @eseb2025.bsky.social - as during previous eseb conferences, we will try to express our artistic selves. The art&science corner available to all and ready to take your artistic visions of science will be live starting from Tuesday morning. More details soon, here and in the conference app.
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Narodowe Centrum Nauki @ncn.gov.pl · 27/06/2025
📢Nowe zasady open access w NCN: większa elastyczność – ta sama idea. ❗️Z dniem 26 czerwca odeszliśmy od wymogu publikowania wyłącznie w otwartym dostępie, jednak nadal rekomendujemy otwarte udostępnianie wyników badań. Szczegóły➡ ncn.gov.pl/aktualnosci/... #openaccess #projektyncn
Budynek Narodowego Centrum Nauki w Krakowie.
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Institute of Environmental Sciences JU @ioes-ju.bsky.social · 28/05/2025
New OPUS in the Institute! Congratulations to @szymekdr.bsky.social ! PanColAvi: Ekologiczne i ewolucyjne uwarunkowania ubarwienia piór ptaków ponad kontekstem prostej reflektancji
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Szymek Drobniak @szymekdr.bsky.social · 07/05/2025
So - on the roof of the Sistine Chapel, there’s a pair of gulls with a nestling they feed ;) the most famous gull couple in the world ;p #birdwatcherbelike #birdseverywhere #conclave #iseebirds Follow them here: www.youtube.com/watch?v=GbNe...
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Hej Blåmes! Gotland's long-term bird monitoring @hejblames.bsky.social · 02/05/2025
#gotland #fieldwork Day 32: it seems our blue tits finally saw the feathers we left for them to choose from. This one used a lovely set of white (not ours) feathers with an eclectic set of blue peacock feathers :)
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Sara Lipshutz (she/her) @jacanamama.bsky.social · 28/04/2025
Now published!!!! www.nature.com/articles/s41...
nature.com
Repeated behavioural evolution is associated with convergence of gene expression in cavity-nesting songbirds - Nature Ecology & Evolution
The authors performed phylogenetically controlled behavioural assays and analysed brain transcriptomes across five avian families, identifying convergent patterns of gene expression associated with aggression and nesting behaviour in obligate cavity-nesting birds.
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