Sign in

Bart Hoekstra

@barthoekstra.bsky.social
894 followers 881 following 83 posts

Postdoc @ Copernicus Institute of Sustainable Development | Movement Ecology | Radar Aeroecology | Birds | Energy | Climate | Monitoring & Comms. @batumiraptorcount.org | Remote Sensing | Open Science | He/Him | barthoekstra.com

PostsRepliesMedia
Reposted by Bart Hoekstra
Eliot Higgins @eliothiggins.bsky.social · 08/07/2026
Google Earth Pro will be no longer avaliable for download from June 2027 onwards. It's one of the tools that made my early work possible, so it's really sad to see it go. support.google.com/earth/thread...
support.google.com
Update on Google Earth Pro desktop app downloads - Google Earth Community
1728179
Reposted by Bart Hoekstra
ESA Exploration @exploration.esa.int · 20/06/2026
"Day 127, orbit 1968 — That aurora was absolutely spectacular… shimmering and dancing beneath us, stretching as far as the eye could see, and so intense it lit up the Station in shades of green 💚", says @esa.int astronaut Sophie Adenot.   📸 ESA/NASA – S. Adenot #εpsilon
0353117
Reposted by Bart Hoekstra
Libby Heeren @libbyheeren.bsky.social · 11/06/2026
Did you know you can search for R packages by what they do, as opposed to just their names? Look! 👉🏼 rwarehouse.netlify.app @kylieainslie.bsky.social made The Warehouse for just this purpose. Send it to a new R programmer today ❤️ because it's the resource we all wish we'd had at some point #rstats
Screenshot of a website with "The Warehouse" at the top. The user has typed "add interactivity to a ggplot" into the search bar at the top of the website and results below include plotly and ggiraph
113246
Reposted by Bart Hoekstra
Joris Frese @fresejoris.bsky.social · 29/05/2026
This is a great study and (one of?) the first of its kind! A note of caution from a human contributor though: given the slow academic publishing process, the findings should primarily be interpreted as a snapshot of AI capabilities (and the capabilities of researchers using AI) in 2024. (1/4)
13714
Reposted by Bart Hoekstra
Jason Dove Mark @jasondovemark.bsky.social · 28/05/2026
Thought provoking science commentary: "AI models assume that relationships remain stable over time, that training data are representative of future conditions, and that observations are independent. These assumptions are routinely violated in ecological systems." www.pnas.org/doi/10.1073/...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
0188
Reposted by Bart Hoekstra
Prof. Sam Lawler @sundogplanets.mastodon.social.ap.brid.gy · 09/10/2025
It's becoming increasingly clear to me that Reflect Orbital's fucking stupid giant mirror satellite, with absolutely NOTHING useful to offer, which will cause countless safety issues, ecological disasters, and destroy the night sky, is going to launch. A bunch of astronomers and I have sent out […]
mastodon.social
Original post on mastodon.social
2362514
Reposted by Bart Hoekstra
The Green Runners @thegreenrunners.bsky.social · 30/04/2026
Thought provoking read about how climate impacts running and how running impacts climate change. “Runfluencer culture and over-consumption in running fashion are dramatically increasing the environmental cost of what should be a low-impact activity. #HowWeKitUp theconversation.com/hurdles-to-a...
theconversation.com
Hurdles to a hobby: How climate change and ‘runfluencer’ culture impact our daily jog
Climate change is already re-shaping how people engage in sport. Due to warming temperatures, running may become less accessible and safe for many of us.
0117
Reposted by Bart Hoekstra
Batumi Raptor Count @batumiraptorcount.org · 18/04/2026
⏳ Just 7 days to apply for the Flyway Monitoring Traineeship Spend a month at Batumi Raptor Count, learning hands-on migration monitoring in one of the world’s largest raptor flyways. Fully funded travel + acco. Open to conservationists in OSME region. www.batumiraptorcount.org/flyway-monit... 🪶🦅
batumiraptorcount.org
BRC Flyway Monitoring Traineeship — Batumi Raptor Count
We are raising \u20AC30,000 to continue our monitoring, conservation and education work in 2026.
054
Reposted by Bart Hoekstra
Bert van der Veen @vdveenb.bsky.social · 14/04/2026
The new Master's programme in Ecological Forecasting at UBT and JMU Würzburg is looking to employ six lecturers and a program coordinator! For more information, please contact Prof. Steven Higgins (www.pfloek.uni-bayreuth.de/en/team/higg...).
21513
Reposted by Bart Hoekstra
Prof Ian Hall @ianhall.bsky.social · 10/04/2026
The Atlantic’s “conveyor belt” is slowing. New observations from 16.5°–42.5°N show a two-decade, basin-wide decline in deep western overturning, the first robust observational evidence that the AMOC is weakening, confirming long-standing model predictions. www.science.org/doi/10.1126/...
science.org
Meridionally consistent decline in the observed western boundary contribution to the Atlantic Meridional Overturning Circulation
Western boundary observations in the Atlantic suggest a meridionally consistent decline in the ocean overturning circulation.
14233127
Reposted by Bart Hoekstra
Ketan Joshi @ketanjoshi.co · 08/04/2026
Putting aside Sam Altman just continuing to emit huge lies constantly, this is an amazing example of what I mean when I talk about how GenAI is replacing *extremely low energy* digital tasks with *WAY WAY HIGHER ENERGY* replacements that *do not even work* Why TF is anyone using ChatGPT as a timer!
gizmodo.com
Sam Altman Says It'll Take Another Year Before ChatGPT Can Start a Timer
An $852 billion company, ladies and gentlemen.
15456981770
Reposted by Bart Hoekstra
Mark McIntyre @markjmcintyre.bsky.social · 03/04/2026
I don't remember seeing an image of Earth before that captures the (thin, fragile, tiny layer of) atmosphere so clearly. I mean, look at that.
Zooming in on the photo of Earth taken by astronauts on Artemis II on their way to the Moon, you can clearly see the Aurora Borealis and thin layer of atmosphere wrapping around the planet.Zooming in on the photo of Earth taken by astronauts on Artemis II, you can clearly see the thin layer of atmosphere wrapping around the entire planet.
3453401644
Reposted by Bart Hoekstra
Kraven Lupei - Toothy 'n Tasty @kravenlupei.bsky.social · 07/04/2026
posting this 'ol thing again for no reason
59114503311
Reposted by Bart Hoekstra
Kyle Horton @kyle-horton.bsky.social · 23/03/2026
🚨 Hiring a postdoc (2 years)! We’re looking for someone with skills in data science, remote sensing, or computer science: 🛰️ Build next-gen nighttime light products 🦅 Link light spectra to migration & collision risk Apply or reach out! aeroecolab.com/opportunities
aeroecolab.com
Purdue AeroEco Lab Opportunities
02639
Reposted by Bart Hoekstra
Batumi Raptor Count @batumiraptorcount.org · 04/04/2026
Our 2026 Flyway Monitoring Traineeship is open for applications from raptor enthusiasts living in the OSME region. Learn all about raptor migration, identification and what it takes to run a count like the BRC, and receive up to €1300 to cover costs. www.batumiraptorcount.org/flyway-monit... 🪶
156
Reposted by Bart Hoekstra
Batumi Raptor Count @batumiraptorcount.org · 01/04/2026
Call for Counters! Join BRC in Autumn 2026 to witness the magnificent migration of >1 million raptors, improve your ID skills, and contribute to population monitoring! Fees: €10-24/day with discounts available! Read more & apply here: www.batumiraptorcount.org/volunteer-as-raptor-migration-counter
069
Reposted by Bart Hoekstra
BTO | British Trust for Ornithology @btobirds.bsky.social · 01/04/2026
1/ Forget tales of escapees from the film set of The African Queen. Ignore rumours of Jimi Hendrix’s supposed liberation of a pair on Carnaby Street. Newly declassified documents from the Ministry Of Defence reveal how Ring-necked Parakeets colonised the UK through Operation Norwegian Blue! 😮 🪶
A close up image of the head of a Ring-necked Parakeet showing its bright green plumage and red bill. Wording alongside reads: Origin of the UK’s Ring-necked Parakeets finally revealed!
1212133
Reposted by Bart Hoekstra
Dakota Smith @weatherdak.bsky.social · 16/03/2026
An absolutely stunning view of a large haboob sweeping across Texas.
12404111
Reposted by Bart Hoekstra
Brian J. Enquist @bjenquist.bsky.social · 13/03/2026
Coding After Coders: The End of Computer Programming as We Know It www.nytimes.com/2026/03/12/m...
nytimes.com
Coding After Coders: The End of Computer Programming as We Know It
152
Reposted by Bart Hoekstra
Michael Friendly @datavisfriendly.bsky.social · 24/02/2026
#rstats Here's a useful guide to creating publication-ready #ggplot figures to journal specifications, which is often quite fiddly. jaquent.github.io/2026/02/crea...
jaquent.github.io
Creating actually publication-ready figures for journals using `ggplot2`
A practical guide to creating publication-ready figures in R using ggplot2, covering journal dimension requirements, custom themes, updated geom defaults, and SVG export—with minimal manual adjustment...
37323
Reposted by Bart Hoekstra
Thomas Germain @thomasgermain.bsky.social · 18/02/2026
I just did the dumbest thing of my entire career to prove a much more serious point. I tricked ChatGPT and Google, and made them tell other users I’m a competitive hot-dog-eating world champion People are using this trick on a massive scale to make AI tell you lies. I’ll explain how I did it
8748162123
Reposted by Bart Hoekstra
Andrew Straw @andrewstraw.bsky.social · 06/12/2025
Have you ever wondered what you would find if you could keep your eyes on a bee for more than a few meters? Us, too! preprint (with videos!) + thread 🧵 Precise, individualized foraging flights in honey #bees 🐝 revealed by multicopter drone-based tracking www.biorxiv.org/content/10.6... 1/9
9376153
Reposted by Bart Hoekstra
Gabriel Zucman @gabrielzucman.bsky.social · 15/02/2026
The pace at which US wealth concentration is rising is simply staggering The concentration of AI wealth into the hands of a few tech barons + plutocratic capture ==> unchartered territory
12642191854
Reposted by Bart Hoekstra
Katharine Hayhoe @katharinehayhoe.com · 13/02/2026
Bluesky is the new science Twitter, new study by @whysharksmatter.bsky.social and Julia Wester concludes! "Results show that for every reported professional benefit that scientists once gained from Twitter, scientists can now gain that benefit more effectively on Bluesky than on Twitter."
academic.oup.com
Scientists no Longer Find Twitter Professionally Useful, and have Switched to Bluesky
Synopsis. Social media has become widely used by the scientific community for a variety of professional uses, including networking and public outreach. For
9667922210
Bart Hoekstra @barthoekstra.bsky.social · 19/01/2026
Aurora Borealis, from the middle of Amsterdam. Visible with the naked eye. Truly exceptional from this light polluted part of the Netherlands. Go outside if you can! #auroraborealis #noorderlicht
191
Reposted by Bart Hoekstra
𝙅𝙖𝙘🍩𝙗 𝙉𝙮𝙧𝙪𝙥 @jacobnyrup.bsky.social · 19/01/2026
I research dictatorships for a living and have spend a non-negligible amount of time reading the words of madmen like Gaddafi, Hitler, and the Kims of North Korea. Even to me this is fucking bunkers.
15615
Bart Hoekstra @barthoekstra.bsky.social · 01/01/2026
Happy New Year! 🎆 As expected, sadly, the radars once again lit up with MILLIONS of birds fleeing from #fireworks. GIF of the @knmi.nl Herwijnen radar See other years: horizon.science.uva.nl/fireworks/ Thread and more science below 🧪🪶
57449
Reposted by Bart Hoekstra
Bart Hoekstra @barthoekstra.bsky.social · 30/12/2024
Another NYE, another night of terror for millions of birds across the Netherlands (and around the world). Last year we published in @ecologicalsociety.bsky.social Frontiers 🧪 about the massive impact of fireworks on birds 🦅. Paper: doi.org/10.1002/fee.... Thread below 🧵👇
A composite image of birds flying in front of fireworks, meant to depict fleeing birds.
48051
Reposted by Bart Hoekstra
James Vincent @jjvincent.bsky.social · 27/12/2025
another robot highlight for 2025: man wearing humanoid mocap suit kicks himself in the balls
9444683914405
Reposted by Bart Hoekstra
Carl Zimmer @carlzimmer.com · 27/12/2025
The @nytimes.com Lost Science series continues. Here's my Q&A with a scientist who was studying how wildfire smoke threatens human health when the EPA decided that her research was no longer a funding priority. Gift link: nyti.ms/4jhpw14
Portrait of Marina Vance, a scientist, sitting in a Colorado grassland.
3384177
Bart Hoekstra @barthoekstra.bsky.social · 26/12/2025
media.tenor.com
a cartoon dog is sitting at a table in front of a fire with the words it 's fine everything is fine
Alt: a cartoon dog is sitting at a table in front of a fire with the words it 's fine everything is fine
020
Reposted by Bart Hoekstra
Batumi Raptor Count @batumiraptorcount.org · 24/12/2025
Recommended read: our 2025 Autumn Report is out! As part of our tradition and commitment, we’ve compiled a comprehensive overview of the season’s highlights and phenological peculiarities — complemented by many beautiful photos of both birds and people! 👉 batumiraptorcount.org/autumn-report-2025
Short-toed Eagle. Photo by Nikolina Bukovac.
01812
Reposted by Bart Hoekstra
Natalie Cooper @nhcooper123.bsky.social · 16/12/2025
Excited to launch the new improved Reproducible Code guide from @britishecologicalsociety.org @methodsinecoevol.bsky.social FREE online here! www.britishecologicalsociety.org//wp-content/... Amazing work by some very talented ECRs. We hope it’s useful!
Book cover for Reproducible Code guide. The cover has a red background with a large yellow-bodied black-headed stag beetle.
6316198
Reposted by Bart Hoekstra
Kevin J. Gaston @kevinjgaston.bsky.social · 18/12/2025
How should the discipline of ecology and the community of ecologists respond to the ecological crisis? Is it time that these were put on something more akin to an emergency footing? www.cell.com/action/showP...
13418
Reposted by Bart Hoekstra
Brent Toderian @brenttoderian.bsky.social · 13/12/2025
The future of transportation isn’t the #Hyperloop* or self-driving cars. It’s the bus, the bike and the elevator. Via @slate.com. AND it’s better land-use & infrastructure decisions, reprioritizing space & budgets, accessible streets, & smart pricing mechanisms. *hyperloop was always a distraction
slate.com
The Future of Transportation Is Not the Hyperloop or the Self-Driving Car. It’s the Bus, the Bike, and the Elevator.
Getting people around in new, different ways relies mostly on technologies that we have had for a while.
1128482
Reposted by Bart Hoekstra
Gabriel Zucman @gabrielzucman.bsky.social · 12/12/2025
It has become received wisdom in Brussels and Washington that there is a new “euro-sclerosis”: that the EU economy is lagging the US This view is wrong A little primer on the measurement of productivity – and why reports of the economic death of Europe are greatly exaggerated🧵
251167602
Reposted by Bart Hoekstra
Janne M. Korhonen @jmkorhonen.fi · 11/12/2025
Apparently it can always get worse. The full version of the new U.S. National Security Strategy, aptly named “NSC-1488” by the wags, calls for actively pulling Poland, Austria, Hungary and Italy from the #EU. And supporting far right. US sides with Putin. notesfrompoland.com/2025/12/10/f...
notesfrompoland.com
Fuller version of Trump security strategy reportedly calls for "pulling Poland away from EU"
27435236
Reposted by Bart Hoekstra
Ulrike Franke @rikefranke.eu · 05/12/2025
A few thoughts on the new US national security strategy that was released today. 🧵 www.whitehouse.gov/wp-content/u...
801502723
Reposted by Bart Hoekstra
Dr. Holly P Jones @dochpjones.bsky.social · 27/10/2025
I am very excited to share that we have a new paper out today in @natrevbiodiv.nature.com In it, we summarize the state of knowledge on the Circular Seabird Economy! 1/n 🧪 Link to paper here: rdcu.be/eMOUd
23615
Reposted by Bart Hoekstra
Kyle Horton @kyle-horton.bsky.social · 20/11/2025
Take three minutes to look at pretty birds, explore radar data, and see how we connect the structure of skies to MacArthur's ideas of niche partitioning. 📡🐦☁️🎧
youtu.be
Structuring the skies: Diel dynamics of migratory animalmovement in the lower atmosphere
YouTube video by Kyle Horton
13217
Reposted by Bart Hoekstra
Cecilia Nilsson @cnilsson.science · 17/11/2025
So proud of this cover that features @barthoekstra.bsky.social amazing photo!
193
Reposted by Bart Hoekstra
Don Moore @capture907.bsky.social · 12/11/2025
For the airplane + red aurora + big dipper fans. 😍
15982187
Bart Hoekstra @barthoekstra.bsky.social · 07/11/2025
I legit choked on my coffee fr 💀
030
Reposted by Bart Hoekstra
Patrick Jansen 🐾 @patrickjansen.bsky.social · 01/11/2025
Schrijver Jac. P. Thijsse telde ooit duizenden vinken langs deze laan. Waar zijn ze nu? Leuk artikel van Addie Schulte in @nrc.nl. www.nrc.nl/nieuws/2025/...
nrc.nl
Schrijver Jac. P. Thijsse telde ooit duizenden vinken langs deze laan. Waar zijn ze nu?
Natuurhistorie: Een eeuw geleden was een van de mooiste lanen van Nederland een trekpleister voor vinken en kepen. De laan is nog steeds mooi, maar de meeste vogels zijn verdwenen. Ligt het aan de beu...
2228
Bart Hoekstra @barthoekstra.bsky.social · 30/10/2025
To reduce negative impacts of #renewables (eg #windenergy) on migrating birds, we need to know *where* and how *high* they fly. Using weather radar, we mapped 6yrs of nocturnal migration over the Netherlands, revealing patterns we can use to avoid and minimize impacts: doi.org/10.1016/j.je... 🧪🪶
Fig. 2. Maps of nocturnal bird migration across the Netherlands in spring and autumn, with the 100 km radius circles of the weather radars enclosing the onshore study area. Colors represent seasonal migration passage, converted from the original bird densities. Shaded areas mark grid cells for which over 25% of the input data, prior to filtering, were impacted by ground clutter. Migration passage in these regions may be compromised in either direction: overestimated due to remaining clutter artifacts or underestimated where terrain features partially obstruct the radar’s lower scanning angles.Fig. 1. Flight altitude distributions (in m above sea level (asl)) of nocturnal bird migration for both Dutch weather radars at a coastal Den Helder and inland site Herwijnen. Bar length denotes the proportion of migration within the respective altitude range (50 m vertical resolution). Donut charts aggregate this further to coarser 200-m classes and display the proportion of migration occurring above 1000 m (patterned). Red highlights indicate the altitude range of onshore energy infrastructure in the Netherlands, which is generally present in the lowest 200 m of the atmosphere. Donut chart proportions do not sum to 100% due to rounding. The small inset map of the Netherlands shows the locations of both radars (solid dots) and the surrounding areas up to 35 km (circles) from which altitude distributions are aggregated.Fig. 3. a, c Observed combinations of migration passage and mean wind power density, a measure of wind power potential, in North-Holland. Red circles represent average values for candidate sites and their size reflects the relative candidate site area. The grid reflects binned values of migration and wind power density, with color shading indicating the type of combination: orange = high migration passage, blue = high wind power density, dark browns and blues = both high. White lines indicate averages for wind power density and seasonal migration passage. b Spatial distribution of autumn migration (orange hues) and wind energy (blue hues) in North-Holland. Candidate wind energy sites are shown in bright red. The highest and lowest autumn migration passage sites are linked to their positions in a and c, emphasizing large differences between sites in autumn, but not in spring. Shaded areas mark grid cells for which over 25% of the input data, prior to filtering, were impacted by ground clutter. Migration passage in these regions may be compromised in either direction: overestimated due to remaining clutter artifacts or underestimated where terrain features partially obstruct the radar’s lower scanning angles.
2115
Reposted by Bart Hoekstra
British Ornithologists’ Union (BOU) @bou.org.uk · 28/10/2025
Dispersal, maturation and recruitment in a long-lived, intercontinental migrant bird | www.sciencedirect.co... | Animal Behaviour | #ornithology 🪶
0148
Reposted by Bart Hoekstra
Santiago Gassó @sangasso.bsky.social · 21/10/2025
🧪 Opinion piece on needs and why to improve on subseasonal-2-seasonal modeling i.e. the forecasting range that is in between short-term forecast (e.g local weather next week) and the seasonal ("will this winter be wet?").
072