Guillermo Navalón
@gnavalon.bsky.social
RyC fellow at UAH (Madrid) | Palaeobiologist interested in birds 🦅🦉🦜🦤 and the evolution of organismal form in vertebrates 🦴
Reposted by Guillermo Navalón
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....
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....
January 8, 2026 at 11:09 AM
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....
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....
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!
January 8, 2026 at 3:18 PM
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!
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!
👇
Amazing descriptive research with a tinge of quantitative flair lead by @lizzysteell.bsky.social
Check it out!
👇
🦴New fossil alert🦴 Introducing Aeviperditus gracilis, a possible bowerbird from the Miocene of New Zealand. My first fossil description!
Artwork by the amazing Sasha Votyakova (Te Papa CC-BY-SA) (🧵1/11)
Artwork by the amazing Sasha Votyakova (Te Papa CC-BY-SA) (🧵1/11)
October 23, 2025 at 9:59 AM
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!
👇
Amazing descriptive research with a tinge of quantitative flair lead by @lizzysteell.bsky.social
Check it out!
👇
Reposted by Guillermo Navalón
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.
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 🧵
October 22, 2025 at 9:55 PM
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.
Reposted by Guillermo Navalón
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 🧵
October 22, 2025 at 8:44 PM
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 🧵
Reposted by Guillermo Navalón
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...
www.jobs.ac.uk/job/DPB994/r...
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.
www.jobs.ac.uk
October 20, 2025 at 12:41 PM
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...
www.jobs.ac.uk/job/DPB994/r...
Reposted by Guillermo Navalón
🚨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
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
June 4, 2025 at 9:51 AM
🚨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
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
Reposted by Guillermo Navalón
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
Art: Gabriel Ugueto @serpenillus.bsky.social
May 29, 2025 at 6:19 PM
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
Art: Gabriel Ugueto @serpenillus.bsky.social
Reposted by Guillermo Navalón
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...
May 23, 2025 at 7:57 AM
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...
Reposted by Guillermo Navalón
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/doi/10.1111/...
Fitting the Bill in an Urban World: Hummingbird Beak Shape Responds to Anthropogenic Factors
Click on the article title to read more.
onlinelibrary.wiley.com
May 23, 2025 at 1:48 PM
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/doi/10.1111/...
Reposted by Guillermo Navalón
🚨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
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
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...
dx.doi.org
May 21, 2025 at 1:20 PM
🚨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
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
Congratulations everyone involved, super beautiful specimen!
Glad to see the formal description of the Chicago specimen of #Archaeopteryx finally out in @nature.com! Troodontid and early bird features in the palate and evidence of tertiary feathers
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Chicago Archaeopteryx informs on the early evolution of the avian bauplan - Nature
Analysis of the 'Chicago' Archaeopteryx, a nearly complete and uncrushed specimen, reveals details of the skeleton, soft tissues and plumage of this taxon, providing information on the evolution to av...
www.nature.com
May 14, 2025 at 3:08 PM
Congratulations everyone involved, super beautiful specimen!
Reposted by Guillermo Navalón
Congratulations, Lizzy!
It's finally out! Together with Allison Yi Hsiang and @fieldpalaeo.bsky.social, we explored relative homoplasy in a range of bird matrices and introduce a new parsimony measure, the relative homoplasy index (RHI) (1/n)
academic.oup.com/zoolinnean/a...
academic.oup.com/zoolinnean/a...
Revealing patterns of homoplasy in discrete phylogenetic datasets with a cross-comparable index
Abstract. Investigating patterns of homoplasy can improve our understanding of macroevolutionary processes by revealing evolutionary constraints on morphol
academic.oup.com
May 14, 2025 at 10:48 AM
Congratulations, Lizzy!
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
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
It's finally out! Together with Allison Yi Hsiang and @fieldpalaeo.bsky.social, we explored relative homoplasy in a range of bird matrices and introduce a new parsimony measure, the relative homoplasy index (RHI) (1/n)
academic.oup.com/zoolinnean/a...
academic.oup.com/zoolinnean/a...
Revealing patterns of homoplasy in discrete phylogenetic datasets with a cross-comparable index
Abstract. Investigating patterns of homoplasy can improve our understanding of macroevolutionary processes by revealing evolutionary constraints on morphol
academic.oup.com
May 14, 2025 at 9:45 AM
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
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
Reposted by Guillermo Navalón
Macroevolutionary integration underlies limb modularity in the origin of avian flight
royalsocietypublishing.org/eprint/TNYK5...
royalsocietypublishing.org/eprint/TNYK5...
May 9, 2025 at 3:47 PM
Macroevolutionary integration underlies limb modularity in the origin of avian flight
royalsocietypublishing.org/eprint/TNYK5...
royalsocietypublishing.org/eprint/TNYK5...
Reposted by Guillermo Navalón
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/...
@birdsoftheworld.bsky.social and Open Tree of Life to put together current relationships across all birds. www.pnas.org/doi/10.1073/...
April 29, 2025 at 4:50 PM
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/...
@birdsoftheworld.bsky.social and Open Tree of Life to put together current relationships across all birds. www.pnas.org/doi/10.1073/...
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/doi/10.1098/...
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 ...
royalsocietypublishing.org
January 22, 2025 at 11:02 AM
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/doi/10.1098/...
