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Martin Bulla

@martinbulla.bsky.social
84 followers 54 following 14 posts

Comparative Biologist | studying #BioRhythms, #reproduction, #shorebirds | #ornithology

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Reposted by Martin Bulla
EXCELScIOR ERA Chair Project @excelscior-era.bsky.social · 19/08/2026
📢 Seminar Alert 🗣️ Global patterns and evolution of avian song complexity @martinbulla.bsky.social (CZU Prague) 📅 28 Aug | 10:30 📍 FMUC 2nd floor (Polo I) 🚪 Entrance: maps.app.goo.gl/4FaBSxdQodxy... 💻 Online: ucmeetings.uc.pt/live/seminar... @ucoimbra.bsky.social @cnc-uc.bsky.social
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Martin Bulla @martinbulla.bsky.social · 10/08/2026
Are our #ResearchFunding systems still distinguishing scientific merit from formal polish? Our preprint asks whether standardised evaluation schemes are vulnerable to score compression as application numbers rise and AI makes polished proposals easier to produce. osf.io/preprints/me...
Composite figure comparing score distributions across funding schemes. Left: Marie Skłodowska-Curie Actions Postdoctoral Fellowships (MSCA PF), shown separately for 8 panels: Social Sciences & Humanities, Economics, Life Sciences, Environmental Sciences & Geosciences, Informatics & Engineering, Mathematics, Physics, and Chemistry. Each panel plots the percentage of proposals scoring at or above a given score from 2018 to 2025. In every panel, the 2025 curve is shifted upward and to the right, indicating more proposals receiving very high scores than in earlier years. Right: Human Frontier Science Program (HFSP), with Postdoctoral Fellowships and Research Grants for 2022 to 2025. These curves overlap much more closely across years, showing comparatively stable score distributions and little sign of increasing compression.
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Martin Bulla @martinbulla.bsky.social · 06/08/2026
Why have birds evolved complex songs? Across 4,940 passerine species, #BirdSong complexity peaks in temperate regions and is structured by evolutionary history and ecology, but shows weak associations with proxies of sexual selection and cognitive signalling. www.biorxiv.org/content/10.6...
Global distribution of passerine song complexity showing highest values in temperate regions, with accompanying phylogenetic patterns across major lineages.
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Martin Bulla @martinbulla.bsky.social · 29/05/2026
How to force a @nature.com retraction and get zero credit for it. A short thread on "invisible correctors" and bibliographic erasure in top-tier journals. 🧵 Read the full behind-the-scenes story at @retractionwatch.com below. Our preprint: ecoevorxiv.org/repository/v... #OpenScience #ZebraFinch
retractionwatch.com
Critics of birdsong study fight to be named in Nature’s retraction
A zebra finch in New South Wales, Australia. Source: JJ Harrison/Wikimedia Commons (CC BY-SA 4.0) Researchers who flagged methodological issues in a paper on birdsong a year and a half before Natur…
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Martin Bulla @martinbulla.bsky.social · 28/04/2026
Sunbirds don’t drink nectar like hummingbirds. They use intralingual suction: the tongue acts like a straw, moving nectar via pressure differences rather than capillarity. A clear case of biomechanical divergence despite ecological convergence. doi.org/10.1016/j.cu... @CurrentBiology #ornithology
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George Olah @georgeolah.bsky.social · 10/03/2026
🦜🏔️ How did vibrant Amazonian parrot feathers end up in a desert tomb on the Pacific coast of Peru 1,000 years ago? Our new paper on @natcomms.nature.com reveals they didn't just trade feathers, pre-Inca societies transported live macaws and parrots across the Andes!👇 www.nature.com/articles/s41...
nature.com
Ancient DNA and spatial modeling reveal a pre-Inca trans-Andean parrot trade - Nature Communications
Here, the authors combine ancient DNA, stable isotopes, and computational modeling to study colorful feathers from a pre-Incan tomb in Peru. They identify four species of parrots, which were likely ca...
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Martin Bulla @martinbulla.bsky.social · 16/03/2026
Massive phenomics dataset spanning the #ants tree of life, with 2,000+ whole-body 3D scans! Congratulations to @shubhamgautam.bsky.social , member of our bullab. www.nature.com/articles/s41...
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Reposted by Martin Bulla
Ferran Sayol @ferransayol.bsky.social · 08/01/2026
New paper out! 🐦📊 We realease AVONICHE, a global dataset with detailed information on the proportional use of 32 foraging niches, combining dietary categories with the behaviours and substrates used to access resources. Openly access the paper and data in GEB: doi.org/10.1111/geb....
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Nature Ecology & Evolution @natecoevo.nature.com · 03/03/2026
Phylogenetic and functional analyses across 34 Lepidoptera and 183 plant species show that hexenal isomerases found in Lepidoptera exhibit functional convergence with those found in plants despite having evolved independently from unrelated enzyme families 🧪 www.nature.com/articles/s41...
nature.com
Convergent evolution of hexenal isomerases in Lepidoptera and plants - Nature Ecology & Evolution
Phylogenetic and functional analyses across 34 Lepidoptera and 183 plant species show that hexenal isomerases found in Lepidoptera exhibit functional convergence with those found in plants despite hav...
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Martin Bulla @martinbulla.bsky.social · 20/02/2026
Is #AI turning grant evaluation into a lottery? 🎲 The 2025 generative AI improvement coincides with ~20% of proposals scoring >95% in EU #MSCA call. We’ve reached "excellence saturation." Time to rethink funding? 👉 doi.org/10.31222/osf... w/ @birder158.bsky.social #MetaScience #AcademicSky
doi.org
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Nature Ecology & Evolution @natecoevo.nature.com · 01/10/2025
Mitochondrial DNA from horses at the Middle Pleistocene archaeological site of Schöningen reveals insight into the evolutionary history of horses, and advances techniques for the analysis of ancient DNA retrieved from highly degraded samples 🧪🐴 www.nature.com/articles/s41...
nature.com
Mitochondrial genomes of Middle Pleistocene horses from the open-air site complex of Schöningen - Nature Ecology & Evolution
Mitochondrial DNA from horses at the Middle Pleistocene archaeological site of Schöningen reveals insight into the evolutionary history of horses and advances techniques for the analysis of ancient DNA retrieved from highly degraded samples.
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Martin Bulla @martinbulla.bsky.social · 09/09/2025
Are our 95% CIs only worth 45% confidence? New preprint authors argue that's too pessimistic and outline extended CIs beyond sampling error. doi.org/10.1101/2025... #statistics #OpenScience #Reproducibility cc @biorxivpreprint.bsky.social @sortee.bsky.social
doi.org
Are our 95% CIs only worth 45% confidence?
When multiple studies on the same research question, or multiple analyses of the same dataset are summarized in a meta-analysis, our confidence intervals (CIs) are put to a relentless test of reliabil...
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Reposted by Martin Bulla
EcoEvoRxiv @ecoevorxiv.bsky.social · 04/07/2025
"Ungeneralizable generalizations? A meta-meta-analysis of the influence of taxonomic bias on the study of behavior." - doi.org/10.32942/X2X...
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Martin Bulla @martinbulla.bsky.social · 02/07/2025
Tiny hands, tiny birds, big curiosity. 🐦‍⬛✨ We took local grammar school kids bird ringing—and they loved it. From gently holding a warbler to learning why birds wear “bracelets,” they got a front-row seat to real science. 🔍📏💍 = ❤️ 🔗 martinbulla.github.io//bullab/gall... #ornithology #scienceoutreach
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Reposted by Martin Bulla
Birds of the World | The Cornell Lab @birdsoftheworld.bsky.social · 25/06/2025
Coming soon! A mid-summer special BOW Discovery Webinar on AVILIST - the world's first unified global checklist of birds. Does this sound good? Would you like to join us? Stay tuned for more info. Target is late July. We'll do our best to make this during a globally friendly timeslot.
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Martin Bulla @martinbulla.bsky.social · 16/06/2025
The deadline for the job application is today.
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Reposted by Martin Bulla
lastpositivist.bsky.social @lastpositivist.bsky.social · 14/06/2025
Paper is finally up and open access (www.journals.uchicago.edu/doi/10.1086/...), it's a sequel to an earlier paper where we'd argued that there's not good evidence that pre-publication peer review is a net benefit (www.journals.uchicago.edu/doi/10.1093/...). So in this one we suggest an alternative.
Jury Theorems for Peer Review
Marcus Arvan, Liam Kofi Bright, and Remco Heesen

Abstract:

Peer review is often taken to be the main form of quality control on academic research. Usually journals carry this out. However, parts of maths and physics appear to have a parallel, crowd-sourced model of peer review, where articles are posted on the arXiv to be publicly discussed. In this article we argue that crowd-sourced peer review is likely to do better than journal-solicited peer review at sorting articles by quality. Our argument rests on two key claims. First, crowd-sourced peer review will lead on average to more reviewers per article than journal-solicited peer review. Second, due to the wisdom of the crowds, more reviewers will tend to make better judgements than fewer reviewers will. We make the second claim precise by looking at the Condorcet jury theorem as well as two related jury theorems developed specifically to apply to peer review.
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Joachim Schork @joachimschork.bsky.social · 05/06/2025
When performing multiple imputation of missing data, it is essential to evaluate how the imputed values compare to the observed data. The attached image was created with the bwplot() function. More: eepurl.com/gH6myT #rstats #bigdata #businessanalyst #datavisualization
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Reposted by Martin Bulla
Nature Ecology & Evolution @natecoevo.nature.com · 05/06/2025
Land use intensification is a major driver of biodiversity change and ecosystem functioning. Here Bagousse-Pinguet et al. identify thresholds of grassland plant community structure and stability in response to land use intensification www.nature.com/articles/s41...
nature.com
Thresholds of functional trait diversity driven by land use intensification - Nature Ecology & Evolution
Land use intensification is a major driver of biodiversity change and ecosystem functioning. Here the authors identify thresholds of grassland plant community structure and stability in response to la...
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Joseph Tobias @josephtobias.bsky.social · 05/06/2025
🚨Some required reading for anyone dabbling in trait-based ecology & ecosystem science.
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Nature Ecology & Evolution @natecoevo.nature.com · 05/06/2025
New archaeological and ancient genomic data from humans in Papua New Guinea and the Bismarck Archipelago shed light on regional human admixture and genetic isolation over the past 2,500 years www.nature.com/articles/s41...
nature.com
The impact of human dispersals and local interactions on the genetic diversity of coastal Papua New Guinea over the past 2,500 years - Nature Ecology & Evolution
New archaeological and ancient genomic data from humans in Papua New Guinea and the Bismarck Archipelago shed light on regional human admixture and genetic isolation over the past 2,500 years.
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Reposted by Martin Bulla
Joseph Tobias @josephtobias.bsky.social · 04/04/2025
Another unexpected angle on bird wing evolution: skeletal measurements suggest that wing bone length is shaped not only by aerodynamics of flight but also by thermoregulation (1/4) onlinelibrary.wiley.com/doi/10.1111/... #macroecology #ornithology 🧪🌎🌐🪶
Scatterplot showing positive correlation between avian wing bone length and temperature across ~1500 bird species, along with diagrams comparing wing bones with low versus high proportional length
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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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Evan Fricke @efricke.bsky.social · 19/05/2025
Pollinator decline has captured global attention, but another plant-animal mutualism is quietly unraveling. Our new Nature Reviews Biodiversity article synthesizes global evidence on seed disperser decline and what it means for plant biodiversity, ecosystem recovery, and climate adaptation. 🧵
rdcu.be
Drivers and impacts of global seed disperser decline
Nature Reviews Biodiversity - Many plants rely on animals to disperse their seeds, but some groups of these seed-dispersing animals are facing severe declines. This Review summarizes evidence of...
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Josef Uyeda @pseudacris.bsky.social · 21/05/2025
Unsolicited listicle: My list of the most criminally underused/underappreciated phylogenetic comparative methods. Note, I am not involved in ANY of these methods; but I see them as things people are often asking of comparative data but have been surprised at how infrequently they have been cited.
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Nicolas Alexandre @nicmalexandre.bsky.social · 21/05/2025
🚨New paper alert!🚨 We show that hummingbird beaks have changed in shape & size since around WWII, driven by the rise of commercialized feeders! 🧵 📄 Paper: dx.doi.org/10.1111/gcb.... #ornithology #evolution #GlobalChangeBiology
dx.doi.org
Supplemental Feeding as a Driver of Population Expansion and Morphological Change in Anna's Hummingbirds
Bird beaks are highly adaptable, with the potential to undergo rapid morphological shifts in response to environmental change such as climatic variation or food availability. Anna's Hummingbirds (Cal...
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Martin Bulla @martinbulla.bsky.social · 13/05/2025
We’re hiring a postdoc (2+ years) in macroecology and macroevolution in my new lab at CZU Prague: www.researchgate.net/job/1021667_...
researchgate.net
POSTDOCTORAL DATA SCIENTIST IN MACROECOLOGY AND MACROEVOLUTION (2+ YEARS IN PRAGUE) at Czech University of Life Sciences Prague in Prague, CZECHIA
May 12, 2025 | We invite applications for a full-time, two-year data scientist postdoctoralposition (with potential for an extension) spanning large-scale... | NEW JOB
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