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Guillermo Navalón

@gnavalon.bsky.social
265 followers 223 following 14 posts

RyC fellow at University of Alcalá (Madrid) | Palaeobiologist interested in birds 🦅🦉🦜🦤 and the evolution of organismal form in vertebrates 🦴

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Guillermo Navalón @gnavalon.bsky.social · 23/09/2026
Quite an updated and deep outlook on the main problems (and potential solutions!) in avian phylogenetics, past and present, stem and crown! Also very well written & nice to read, congrats you both (J. Benito is not in bluesky yet)!
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Lizzy Steell @lizzysteell.bsky.social · 24/07/2026
This is soooooo cool! 🐦 🎶 Something that always made me wonder when birding in a tropical place is how different the bird songs sound to temperate places. Amazing work!
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Guillermo Navalón @gnavalon.bsky.social · 24/07/2026
I have been hacked in X/Twitter so all my contacts if they receive some weird DM is not me! I am trying to get it back!
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Lizzy Steell @lizzysteell.bsky.social · 20/07/2026
Great paper! A huge amount of effort went into the makings of this awesome work on passerine bird skeletal evolution, congrats everyone 🐦
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Sergio @nebreda.bsky.social · 24/02/2026
Here you can check out the original article, published in the #SwissJournalofPalaeontology 👇 sjp.pensoft.net/article/1828...
sjp.pensoft.net
An isolated skull from Las Hoyas (Early Cretaceous, Spain) informs the early evolution towards elongated rostra in enantiornithine birds (Aves, Ornithothoraces)
The fossil record of Early Cretaceous enantiornithine birds from the Iberian Peninsula is the most significant in the world outside of China. Despite its historical relevance, taxonomic diversity, and...
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Guillermo Navalón @gnavalon.bsky.social · 24/02/2026
Welcome Gorgonavis! First longirostrine enantiornithine out of China!
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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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Guillermo Navalón @gnavalon.bsky.social · 08/01/2026
Beyond excited to announce that as of today I officially started a Ramón y Cajal 5-year senior fellowship (tenure-track) at University of Alcalá in Madrid, if you are interested in birds & vertebrate macroevolution & you like sun & good food, hit me up to explore postdoc or PhD opportunities!
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Guillermo Navalón @gnavalon.bsky.social · 23/10/2025
Bowerbirds are Australo-Papuan birds engaging in some of the most flamboyant displays among vertebrates, and they might have been in New Zealand - Aotearoa in the Miocene too! Amazing descriptive research with a tinge of quantitative flair lead by @lizzysteell.bsky.social Check it out! 👇
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Nic Rawlence @nicrawlencenz.bsky.social · 22/10/2025
This research mahi on the St Bathans bowerbird was led by the amazing @lizzysteell.bsky.social of the @fieldpalaeo.bsky.social lab. She is one of the up and coming palaeontologists working on passerines (songbirds) and definitely one to watch.
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Nic Rawlence @nicrawlencenz.bsky.social · 22/10/2025
Welcome to the world Aevipertidus gracilis - the gracile one from a lost age. 14-19 Mya ancient #NewZealand appears to have had a bowerbird. Check out this amazing research mahi led by Elizabeth Steell (www.tandfonline.com/doi/full/10....). Artwork by Sasha Votyakova/Te Papa CC-BY-SA. 1/9 🧵
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Catherine Sheard @sheardcat.bsky.social · 20/10/2025
Sweet-looking postdoc with Chris Cooney (who is awesome) on perceptual bias and animal communication signals. FWIW, Sheffield seems to be a genuinely great place to live. www.jobs.ac.uk/job/DPB994/r...
jobs.ac.uk
Research Associate (Biodiversity & Evolution) at University of Sheffield
Apply now for the Research Associate (Biodiversity & Evolution) role on jobs.ac.uk - the leading job board for higher education jobs. View details.
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Stephen Montgomery @ebablab.bsky.social · 04/06/2025
🚨Anyone want a job?🚨 We have two #postdocs up for grabs! 🧪 - cell developmental biology/#evodevo/#neuroevodevo - bioinformatics and molecular biology Both working on brain evolution in Heliconiini butterflies Details below! Please repost 🙏 1/n
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Lauren Wilson @lnwilson.bsky.social · 29/05/2025
Millions of birds nest in the Arctic each year. But did you know they’ve been doing this since the Cretaceous? Can’t believe I finally get to share that our paper on the birds of the Prince Creek Formation is out in ‪@science.org (and on the cover)! 🧵 Art: Gabriel Ugueto ‪@serpenillus.bsky.social
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Field Palaeobiology Research Group @fieldpalaeo.bsky.social · 23/05/2025
Exciting news at Cambridge! We are launching the Darwin-Hamied Centre to promote research at the intersection of biodiversity and economics christs.cam.ac.uk/news/darwin-.... We are advertising two 5-year Senior Research Fellowships—application deadline 22nd June! christs.cam.ac.uk/vacancies-ch...
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Lizzy Steell @lizzysteell.bsky.social · 23/05/2025
Excited to share an invited commentary about the fantastic and ambitious work by @nicmalexandre.bsky.social and colleagues in @globalchangebio.bsky.social on Anna's Hummingbird beaks. It was a joy to write about, congratulations on a super cool study! onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Fitting the Bill in an Urban World: Hummingbird Beak Shape Responds to Anthropogenic Factors
Click on the article title to read more.
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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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Guillermo Navalón @gnavalon.bsky.social · 14/05/2025
Congratulations everyone involved, super beautiful specimen!
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Field Palaeobiology Research Group @fieldpalaeo.bsky.social · 14/05/2025
Congratulations, Lizzy!
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Guillermo Navalón @gnavalon.bsky.social · 14/05/2025
Congratulations to @lizzysteell.bsky.social for the publication of her PhD magnum opus🥳🥳🥳New index to evaluate homoplasy in morph. datasets & tons of fun read about the effects of levels of homoplasy in macroevolutionary patterns! #homoplasyisnotdusty #superproud #doseefig6
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Manuel Hernández Fernández @hdezfdez.bsky.social · 09/05/2025
Macroevolutionary integration underlies limb modularity in the origin of avian flight royalsocietypublishing.org/eprint/TNYK5...
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Emily Jane McTavish @snacktavish.bsky.social · 29/04/2025
A complete and dynamic tree of birds - out today in PNAS! Teamwork with @eliotmiller.bsky.social and others at @birdsoftheworld.bsky.social and Open Tree of Life to put together current relationships across all birds. www.pnas.org/doi/10.1073/...
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Guillermo Navalón @gnavalon.bsky.social · 22/01/2025
If you want to know what's going in the field of Mesozoic ornithology we published today a review in #BiologyLetters @royalsocietypublishing.org focused on four anatomical systems! royalsocietypublishing.org/doi/10.1098/...
royalsocietypublishing.org
Whence the birds: 200 years of dinosaurs, avian antecedents | Biology Letters
Among the most revolutionary insights emerging from 200 years of research on dinosaurs is that the clade Dinosauria is represented by approximately 11 000 living species of birds. Although the origin ...
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Guillermo Navalón @gnavalon.bsky.social · 04/01/2025
www.cam.ac.uk/stories/root...
cam.ac.uk
Bird brain from the age of dinosaurs reveals roots of avian intelligence
A ‘one of a kind’ fossil discovery could transform our understanding of how the unique brains and intelligence of modern birds evolved, one of the most enduring mysteries of vertebrate evolution.
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