Reposted by Alex Courtiol 🐘🦇🦅👨💻ASAB @asab.org · 09/07/2026It's official: #Behaviour2027 is happening in Vienna next summer! 03917
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 24/07/2026@marta-mosna.bsky.social presented this week at @isbe2026.bsky.social her great work "The legacy of privilege: Social inheritance reverses sex differences in reproductive inequality in the spotted hyena". The paper came out today in Science Advances: www.science.org/doi/10.1126/... Do check it out!science.orgThe legacy of privilege: Social inheritance reverses sex differences in reproductive inequality in the spotted hyenaThe social transmission of privilege from mother to daughters reverses typical male-biased reproductive inequality. 062
Reposted by Alex Courtiol 🐘🦇🦅👨💻Ecological Dynamics Dept. | IZW Berlin @ecodynizw.bsky.social · 18/01/2026Led by Viktoriia Radchuk, an international collaboration shows phenological shifts in response to changing temperatures allow populations to remain stable or even increase in numbers. Support from #sDiv @idiv-research.bsky.social 13217
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 09/08/2025- 3. gold: publicdelivery.org/sebastiao-sa... Feel free to link to others!!publicdelivery.orgSebastião Salgado’s impressive photos: This was Brazil’s largest & most dangerous gold mineSalgado’s Serra Pelada Serra Pelada is a series of photographs taken in 1986 depicting endless numbers of mine workers distributed on various parts of a… 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 09/08/2025- 2. amber: www.nationalgeographic.com/history/article/illegal-amber-mining-ukrainenationalgeographic.comThe Dramatic Impact of Illegal Amber Mining in Ukraine’s Wild WestA chaotic scene in Ukraine has miners pitted against each other and the government, often with deadly consequences and significant environmental harm. 100
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 09/08/2025Enjoying my low carbon footprint form of travel toward #ecobhvr2025, I am re-reading some accounts of environmental/societal destruction caused by the extraction of rare natural products that dazzle most of us... My selection of illustrated stories: - 1. mammoth ivory: www.rferl.org/a/the-mammot...rferl.orgThe Mammoth PiratesIn Russia's Arctic north, a new kind of gold rush is under way. 110
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 09/08/2025It turns out that since the 2 legs (Berlin -> Paris and Paris -> Montpellier) had not been purchased together, the SNCF could not put me up in an hotel at their own cost. They did, after a smile, gave me a free 1st class ticket for the next day, so I am now in a fast train towards Montpellier 🛤️ 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 08/08/2025It looks like that the direct train between Berlin and Paris is so delayed that I will miss my connection to the night train... So I'll spent a night in Paris, exciting... The adventure continues. #SlowTravel & #SustainableTravel to #ecobhvr2025!! 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 08/08/2025Just boarded a train with my bike in Berlin. If all goes smoothly I should reach Montpellier within 21 hours, with plenty of time before the launch of #ecobhvr2025. Only one change in Paris... So, time to unpack the laptop and check my slides (perhaps after an episode of Wednesday #2...). 230
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 12/07/2025I have just read the Anti-Autocracy Handbook and I think everyone else should too: sks.to/autocracy Thanks to @lewan.bsky.social and others for putting this together!!sks.toThe Anti-Autocracy Handbook: A Scholars' Guide to Navigating Democratic BackslidingThe Anti-Autocracy Handbook is a call to action, resilience, and collective defence of democracy, truth, and academic freedom in the face of mounting authoritarianism. It tries to provide guidance to ... 0115
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 18/05/2025I just wrote a tutorial about how to use #Rstats & RStudio using a container system (podman): gist.github.com/courtiol/ce0... I did this for myself (a linux user), but it may be useful to others too. Let me know what you think of it.gist.github.comusing R & Rstudio using podman.mdGitHub Gist: instantly share code, notes, and snippets. 040
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 09/05/2025Do Spix's macaws really behave as they do in the animated films Rio? To find out, read our new preprint: doi.org/10.1101/2025... 010
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 05/05/2025Our paper on how climate change impacts bat hibernation is out🎉 It was a long journey paved with many desk rejections despite a huge amount of work put in collecting and analysing the data, but we are proud of the result and very happy with the one journal that did review it: doi.org/10.1111/ele....doi.orgShorter and Warmer Winters Expand the Hibernation Area of Bats in EuropeOur study pioneers a methodology integrating empirical physiology measurements with climate models, enabling accurate predictions of the distribution of hibernating animals under projected climate ch.... 011
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 29/04/2025The survey link: workforce-survey.marine-conservation.org/who-protects...workforce-survey.marine-conservation.orgwho-protects-the-oceanformr survey framework. chain simple surveys into long runs, use the power of R to generate pretty feedback and complex designs 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 29/04/2025Working in or with Marine Protected Areas?🌊 We need your help! In this video, Christine Ward-Paige, introduces our workforce survey: youtu.be/M3Nm5KuyN_Q?... This is an effort involving Blue Nature Alliance, MCI, IUCN, @rewildorg.bsky.social, Leibniz-IZW and others. Please share!!youtu.beMPA Workforce Study 2025 — Overview | 🌊eOceans®🦀YouTube video by eOceans 110
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 12/01/2025Our paper on ducks in the city is out! Using 16 yrs of data (>1000 breeding events) collected by NABU Berlin (berlin.nabu.de), we looked at why many ducks nest on buildings. The landscape doesn't matter much, it's more an individual choice and the appeal of the breeding site: doi.org/10.1093/jue/...doi.orgBreeding site fidelity in the concrete jungle: implications for the management of urban mallardsAbstract. Understanding the selection of breeding sites in cities is key for the effective management of urban bird populations. We analysed 16 years of da 010
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 02/12/2024Yes, strict double blind requirements from the journal. 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 02/12/2024Anonymizing an #rstats 📦 for a submission to Methods in Eco Evo, I replaced names in DESCRIPTION, README, vignettes, doc... But calling packageDescription("pkg.tar.gz") revealed that the computer name is used as metadata 🤨 Solution: build your tar.gz in a terminal using R CMD build --user=anonymous 130
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 27/11/2024Done! I reworked the filters and reduced the rate of both false positives and false negatives. It should now catch your pics @matkempphotos.bsky.social 110
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 27/11/2024Na, to find wildlife pics I should make sure that #wildlifephotography is enough. I personally like the combo 🪶📷 as it is short and pertinent albeit bird biased. 110
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 27/11/2024To repost wildlife pics I simply detect messages with at least one element among "#photography #picture #pics #camera 📷 📸 🖼️" AND one among "#wildlife #bird #animal 🪶". I also try to remove messages with keywords that tend to be associated with false positives. These rules could be expanded! 120
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 11/11/2024What do you call usual? Using c_across? If so, lay runs much faster. Check the vignette or README on GitHub. 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 08/07/2024Landed in Budapest. About to spend a week with the Finnish national team of horseback archery! 🏹🐴🇫🇮 010
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 02/05/2024Why a growing population is not necessary a sign of its environment getting better? Check out our latest preprint: doi.org/10.1101/2024... -> huge amount of work from former postdoc Liam Bailey, now data wizard for WWF. It is also the result of the amazing data collected by hyena-project.comdoi.orgEffects of environmental change on population growth: monitoring time-varying carrying capacity in free-ranging spotted hyenasbioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution 011
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 19/11/2023I've just created a feed called "wildlife photography". It catches posts with pictures that are about wildlife through a collection of hashtags that I will continuously refine to improve the feed. It was easy thanks to skyfeed.app Please pin/save and let me know what you think. #wildlifephotography 120
Reposted by Alex Courtiol 🐘🦇🦅👨💻The Hunting of the Snark @snarkhunt.bsky.social · 18/11/2023I took that photo in Tokyo (Higashi-Yukigaya 2002). The birds sometimes install such nests on power lines of Japan Railways and need to be removed in order to avoid power outages. 44310
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 19/11/2023If people wonder why {terra} and not {stars}. My main answer would be that all plotting functionalities of the #rstats 📦 IsoriX are based on {lattice} via {rasterVis}. The latter 📦 now handles {terra} objects very well. Had I switched to {stars}, all plotting functions would have had to be recoded. 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 19/11/2023Without {raster}, the #rstats 📦 IsoriX lost the ability to store objects it creates as binaries. So I had to implement S3 & S4 methods for that, building on {terra}'s wrapping functionalities. I also discovered that `raster::aggregate` and `terra::aggregate` have different default `na.rm` behaviour. 020
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 19/11/2023I thought that the transition would be trivial, but it turned out not to be. Without {sp}, IsoriX initially lost the ability to plot oceans, which are polygons with holes (i.e. polypaths). So we had to add this feature in #rstats 📦 {lattice} and {rasterVis}, which IsoriX uses. More 👇 200
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 19/11/2023IsoriX v0.9.2 -- an #rstats 📦 for building isoscapes using mixed models and inferring the geographic origin of samples based on their isotopic ratios -- is now on CRAN. The main change between v0.9.1/v0.9.2 and earlier versions is that it no longer imports {raster} & {sp}, but {terra}. More 👇 110
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 17/11/2023You should not decide based on the effect sizes but on how well it fits. If you impose a continuous effect, it can indeed artificially increase effect sizes if the real effect is not linear. Then the predict functions can sample different values along the continuum, hence your problem. -> factor 020
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 17/11/2023Did you make sure to declare "height" as a factor? 110
Reposted by Alex Courtiol 🐘🦇🦅👨💻Posit @posit.co · 14/11/2023R? In the browser? What?! #WebR makes it possible to run #RStats code in the browser without the need for an R server to execute the code: the R interpreter runs directly on the user’s machine. George Stagg shares an overview of the 0.2.0 release on YouTube: www.youtube.com/watch?v=Mpq9...youtube.comwebR 0.2 Overview: R in the browser | George Stagg | PositWebR is a version of the statistical language R compiled for the browser and Node.js using WebAssembly, via Emscripten.WebR makes it possible to run R code i... 05126
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 14/11/2023Because it does the same things but also much more... e.g.: - those reading your document can copy a full chunk of code by clicking on 🗒️. - you can highlight specific lines of codes in presentations. - you can create text boxes ( quarto.org/docs/authori... ) with special formatting for documents. 120
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 14/11/2023It is indeed a formatting issue triggered by 100000 being a double, so the following also works as expected: > as.character(100000L) 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 13/11/2023A more simple illustration of the same #rstats coercion oddity 👇 131
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 13/11/2023Visiting the website of Even Rouault (a core developer behind GDAL and other spatial libraries used by many packages in #rstats, #python...), I bumped into this mini opinion about "Fighting misconceptions about Open source": www.spatialys.com/en/opinions/ 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 12/11/2023I just rediscovered that `lintr::lint_package()` is a great solution to check #rstats code in your package. lintr.r-lib.org 020
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 12/11/2023Yes, but I've learned my lesson and opted for not having to coerce in the first place. 020
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 11/11/2023`as.numeric()` turns the text into decimal numbers (type "double" in R), while a sequence such as `99998:100001` is made of integers ("integer"). The transformation of numbers into text ("character") behave differently in those 2 situations as shown in underlying C code: github.com/wch/r-source... 110
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 11/11/2023One would first need to know how to add webfonts to RStudio 🤔 000
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 11/11/2023Just discovered the root of a #rstats bug emerging only every 100,000 iterations 👇... (coercing is always dangerous, but I had not seen that one coming) 292
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 10/11/2023My fresh trials confirms this (see 👇, the red is the expectation). Depending on sample size, parameters, and runs, it can be quite far from perfection however. This is I believe a limitation of smoothers in general. I am planning to do this: github.com/courtiol/tim... to help. 210
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 10/11/2023Don't expect a line if the correlation is fixed, but the CI should encompass a horizontal line. According to the original paper which I relied on, the coverage of the confidence interval should be quite OK overall: link.springer.com/article/10.1...). 100
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 10/11/2023🤔 I did test that when the bandwidth used for the smoothing is infinite, the correlation does form a straight horizontal line and the value is the same as the one given by `cor()`. What I did not (*yet*) test is whether a constant correlation does lead the smoothers to select a large bandwidth. 100
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 10/11/2023Ah! Perhaps I misunderstood, I thought that the point was that each R package (and not just pak) would ultimately (via the pak system) carry all R packages it must import within it, which for some packages would probably lead to much more than 10MB. 010
Alex Courtiol 🐘🦇🦅👨💻 @datazoogang.de · 09/11/2023Tempted to measure how the correlation between 2 variables varies over time? If the answer is YES, you may find my #rstats 📦 **timevarcorr** (newly on CRAN) useful: courtiol.github.io/timevarcorr/ I implemented the method described in this paper: link.springer.com/article/10.1... Enjoy! 1131