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ethanofthegulls.bsky.social
Ethan Gyllenhaal
@ethanofthegulls.bsky.social
130 followers 150 following 20 posts
NSF Postdoc at Texas Tech and Cornell studying the evolution of south Pacific birds with genomics, museums, and simulations. Birder. SLiM enjoyer. He/him.
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ethanofthegulls.bsky.social
Ethan Gyllenhaal @ethanofthegulls.bsky.social · Apr 17
Some species had an outsized role in shaping evolutionary theory. The Fiji Whistlers featured heavily in Ernst Mayr's development of the biological species concept and its application to allopatric taxa. In our new paper, we revisited this system with genomic data 🧵

doi.org/10.1093/sysb...
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Reposted by Ethan Gyllenhaal
r-yamaguchi.bsky.social
Ryo Yamaguchi @r-yamaguchi.bsky.social · 1d
New review out! With students in my lab, we explore how population size shapes speciation—from drift in small populations to selection in large ones. Do small or large populations speciate faster? The answer is more nuanced than you might think.
esj-journals.onlinelibrary.wiley.com/doi/full/10....
Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas...
esj-journals.onlinelibrary.wiley.com
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Reposted by Ethan Gyllenhaal
jlwilliamson.bsky.social
Jessie Williamson @jlwilliamson.bsky.social · 1d
My lab is hiring a 2-yr hummingbird evolution and genomics postdoc and a 1-yr salaried research and lab tech. Both with full U. Wyoming benefits. Please spread the word! Info below. Best consideration date Nov 1, start dates early Spring 2026.
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Reposted by Ethan Gyllenhaal
s-m-aguillon.bsky.social
Dr. Stepfanie Aguillon 😷 @s-m-aguillon.bsky.social · 4d
So great to have this work led by @devonderaad.bsky.social covered by an Evolution Digest!
jenteo.bsky.social
Jente Ottenburghs | Avian Hybrids @jenteo.bsky.social · 4d
🥳 My latest digest for Evolution is now available online!

Digest: Postzygotic isolation barriers stabilize a hybrid zone between two grosbeak species
academic.oup.com/evolut/advan...

Original paper: academic.oup.com/evolut/advan...

#ornithology
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Reposted by Ethan Gyllenhaal
jdmanthey.bsky.social
Joe Manthey @jdmanthey.bsky.social · 8d
Our paper on the temporal genomics of Ethiopian birds
has been highlighted (and gotten the cover) in @genomebiolevol.bsky.social
Article: doi.org/10.1093/gbe/evaf163
Highlight: doi.org/10.1093/gbe/evaf175

w/ @bourgeoisyann.bsky.social, @lcampillo.bsky.social, and others not on bsky
Genome Biology and Evolution October 2025 cover image with a photo of an Ethiopian White-eye.
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Reposted by Ethan Gyllenhaal
daveyfwright.bsky.social
Dr. Davey F. Wright ⛏️🦕🧬 @daveyfwright.bsky.social · 13d
🚨We're hiring! The Sam Noble Oklahoma Museum of Natural History is seeking a tenure-track split position as Assistant Curator of Ichthyology and Assistant Professor of Biological Sciences. Please retweet & share with colleagues! 🐟🐠🧪

Apply here: apply.interfolio.com/174674
A job ad with multiple images, including the exterior of the museum, a view of collections (jars on shelves), and pictures of some cool, tropical fish but I don't know enough about fish to describe them other than to say they're pretty colors of yellow and blue/green
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Reposted by Ethan Gyllenhaal
jbyoder.org
Jeremy BOO! Yoder 🎃💀🕷️ @jbyoder.org · 16d
New today: We're petitioning NSF to revert GRFP eligibility criteria to last year's terms, to avoid pulling the rug out from under the earliest of early-career scientists who had every reason to think they'd be able to apply this year. Sign and spread the word!

laurenkuehne.github.io/grfpChanges/
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Reposted by Ethan Gyllenhaal
madiraibullock.bsky.social
Madison Bullock @madiraibullock.bsky.social · 23d
Excited to share what I've been working on with the science community! Starting to get my PhD papers out as I get closer to graduating, and looking into next steps in my career. If anyone has any postdoc ideas, please reach out! 🙂🌱
mossmatters.bsky.social
Matt Johnson, PhD @mossmatters.bsky.social · 23d
New preprint from our lab - how miniaturized library prep drives down costs for target capture sequencing with minimal impact on recovery. Led by @madiraibullock.bsky.social and with two undergrad coauthors!

www.biorxiv.org/content/10.1...
Fun-Sized Library Prep: Miniaturization is a valid method for per-sample cost reduction in targeted sequencing of angiosperm DNA
Genomic analysis of population structure is important to the conservation of plant species of concern. A limitation of using genetic information in conservation is the cost of obtaining large datasets...
www.biorxiv.org
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Reposted by Ethan Gyllenhaal
science.org
Science Magazine @science.org · Sep 15
A new Science study of ants in Fiji—involving genomic sequencing of over 4000 ant specimens from museum collections—shows that most native species have been in decline since humans first arrived in the archipelago 3000 years ago. https://scim.ag/489mI2o
Genomic signatures indicate biodiversity loss in an endemic island ant fauna
Insect populations have declined worldwide, but the extent and drivers of these declines are debated. Most studies rely on field surveys performed in the past century, leaving gaps in our understandin...
www.science.org
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Reposted by Ethan Gyllenhaal
s-m-aguillon.bsky.social
Dr. Stepfanie Aguillon 😷 @s-m-aguillon.bsky.social · Sep 12
The first Aguillon Lab paper is officially out in early view at Evolution!! Led by postdoc @devonderaad.bsky.social, we’ve explored the hybrid zone between black-headed and rose-breasted grosbeaks in the Great Plains. #ornithology #hybridization #speciation #evolution doi.org/10.1093/evol...
Figure 1A from the paper shows the distribution of black-headed (western) and rose-breasted grosbeaks (eastern) throughout North America. Small illustrations of males of each species are shown. Black-headed has a rusty orange breast and black head, while rose-breasted has a small reddish bib with a bright white belly. There is an inset map of South Dakota showing the transect across the hybrid zone
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Reposted by Ethan Gyllenhaal
sifolinia.bsky.social
Mike Lush 🐜🪲🪰🐝 @sifolinia.bsky.social · Sep 11
Fiji ant study provides new evidence of insects’ decline on remote islands www.theguardian.com/environment/...
Fiji ant study provides new evidence of insects’ decline on remote islands
DNA analysis of endemic specimens in museums finds 79% of ant populations in Pacific archipelago are shrinking
www.theguardian.com
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Reposted by Ethan Gyllenhaal
sclaramunt.bsky.social
Santiago Claramunt @sclaramunt.bsky.social · Sep 10
Excited to share our new paper on flight morphology and migration in North American wood warblers. Surprisingly, ground-dwelling warblers may be better adapted for migration than aerial ones!!!

link.springer.com/article/10.1...
Morphological adaptations for migration in North American wood-warblers (Aves: Parulidae) - Journal of Ornithology
Migration exerts a selective pressure for increased flight efficiency and reduced energy expenditure in long-distance migratory birds. In North America, eastern migratory flyways are longer and requir...
link.springer.com
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Reposted by Ethan Gyllenhaal
cientificolatino.com
Cientifico Latino, Inc. @cientificolatino.com · Sep 9
Applying to the NSF-GRFP (or another fellowship) on a tight deadline?

We built a 7-week guide + timeline to get you from draft to submission. It’s not too late — you’ve got this! ✨

🔗 cientificolatino.com/apply-in-7-weeks

#NSFGRFP #GradSchool #Fellowship
Flyer How to apply to the NSF-GRFP (in 7 weeks!). Check out our comprehensive guide and timeline for applying to the NSF-GRFP (or any fellowship!) on a deadline. Give it a shot — it’s not too late! Resource by Olivia Goldman, PhD and John Lê. Photos of authors. Cientifico Latino, Inc. logo. Link: cientificolatino.com/apply-in-7-weeks
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Reposted by Ethan Gyllenhaal
ecoevolab.bsky.social
Casey terHorst @ecoevolab.bsky.social · Sep 8
The GRFP lives!! (due end of October)
www.nsf.gov/funding/oppo...
NSF Graduate Research Fellowship Program (GRFP)
www.nsf.gov
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Reposted by Ethan Gyllenhaal
biorxiv-evobio.bsky.social
bioRxiv Evolutionary Biology @biorxiv-evobio.bsky.social · Sep 2
SimHumanity: Using SLiM 5.0 to run whole-genome simulations of human evolution https://www.biorxiv.org/content/10.1101/2025.09.01.673541v1
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Reposted by Ethan Gyllenhaal
siluwang.bsky.social
Silu Wang (she/her)🇨🇦 @siluwang.bsky.social · Aug 30
Why do speciation rates vary across the tree of life?
Some of the best yet most underappreciated places for this investigation are natural hybrid zones.
This preprint takes you to the hybrid zones in the origin of species to find a clue. 👉 shorturl.at/N7FXE
#Speciation #Evolution #hybridization
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Reposted by Ethan Gyllenhaal
codylimber.bsky.social
Cody Limber @codylimber.bsky.social · Aug 26
My feather cell type paper is finally out! doi.org/10.1111/ede.... We’ve packed a ton of stuff into this paper but I’ll go through some highlights in this thread!
Genetic Characterization of the Cell Types in Developing Feathers, and the Evolution of Feather Complexity
We used single cell sequencing to investigate the cell types of developing chicken feathers. From these data, we are able to describe the transcriptional profile of feather cell types, look at their ....
doi.org
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Reposted by Ethan Gyllenhaal
andremoncrieff.bsky.social
Andre Moncrieff @andremoncrieff.bsky.social · Aug 25
🐦🔬 Recruiting PhD students! 🌎🧬
I’m looking for 1–2 PhD students to join our team starting Fall 2026 at the Sam Noble Museum & University of Oklahoma.

Our research: 🐦 birds • 🌍 biogeography • 🌴 Neotropics • 🧬 population genomics • 🌱 speciation

👉 Learn more: www.moncriefflab.org

Please share!
Moncrieff Lab | Bird Evolution
The Moncrieff Lab is a research lab based at the Sam Noble Oklahoma Museum of Natural History on the campus of the University of Oklahoma. Research in the lab involves museum specimens, fieldwork, and...
www.moncriefflab.org
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Reposted by Ethan Gyllenhaal
prosanta.bsky.social
Prosanta Chakrabarty @prosanta.bsky.social · Aug 19
Calling all natural history/museum collections folxs

The theme of the @systbiol.bsky.social breakout meeting in Baton Rouge is 'The Importance of Natural History Collections'

The LSU Museum of Natural Science will host some events. Hope to see you there, Jan 9-11, 2026.

ssb2026.github.io
2026 SSB Breakout Meeting
ssb2026.github.io
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Reposted by Ethan Gyllenhaal
gilbert-lab.bsky.social
Neil Gilbert @gilbert-lab.bsky.social · Aug 21
our paper on how light pollution affects bird vocal behavior is out today in Science!!

w/ @brentpease.bsky.social

www.science.org/doi/10.1126/...
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Reposted by Ethan Gyllenhaal
biorxiv-evobio.bsky.social
bioRxiv Evolutionary Biology @biorxiv-evobio.bsky.social · Aug 11
SLiM 5: Eco-evolutionary simulations across multiple chromosomes and full genomes https://www.biorxiv.org/content/10.1101/2025.08.07.669155v1
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Reposted by Ethan Gyllenhaal
tropbiolab.bsky.social
TropBioLab @tropbiolab.bsky.social · Aug 7
Interested in how new sex chromosomes evolve in birds? Our NSF-funded collaborative work with the (Daven) Presgraves lab at @urochester.bsky.social is out this week in @pnas.org. Check it out!

www.pnas.org/doi/10.1073/...
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ethanofthegulls.bsky.social
Ethan Gyllenhaal @ethanofthegulls.bsky.social · Aug 7
At the end of a productive scouting and networking trip to Fiji. It was such a treat to see the species (and some additional specimens) that I worked on from afar during my PhD. Even more exciting was to meet long-term collaborators and connect with new ones. Excited to return next year!
Photo of a stunning vista from an open area, over a stretch of ocean, with distant land in the background. The view represents the one across the Natewa Bay, an important barrier I am studying. A view from the beach near the campus near the University of the South Pacific, showing a little stretch of flats with shorebirds and terns sitting on the beach. A photo of specimens of the Fiji Whistler complex housed at the South Pacific Regional Herbarium. A photo with Alivereti Naikatini and Sainivalati Vido, who worked with my former advisor during his PhD. Alivereti has been a valuable past, present, and future collaborator, and made this trip possible.
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Reposted by Ethan Gyllenhaal
siluwang.bsky.social
Silu Wang (she/her)🇨🇦 @siluwang.bsky.social · Jul 29
Check out our new special feature: Monitoring and Restoring Gene Flow in the Increasingly Fragmented Ecosystems of the Anthropocene www.pnas.org/topic/574 #biodiversity #evolution #ecology #popgen #ClimateEmergency
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Reposted by Ethan Gyllenhaal
oceanfilly.bsky.social
Brooke Fitzwater, PhD (she/her) 🐟🪱🏳️‍🌈♾️ @oceanfilly.bsky.social · Jul 24
With many postdoc grants like the NSF PRFB, Ford Fellowship, and Hanna H. Gray fellowships disappearing, I am currently looking for grants that could fund incoming postdoctoral scholars. Here is a thread of some of them 🧵
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