Birds, monitoring, travelling and ecology. Working @INBOVlaanderen. Guiding @STARLINGreizen. Co-founder @BatumiRaptors. Using @SwarovskiOptik. Personal tweets.
Ghent, Belgium
Joined October 2016
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- Following212
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I am leaving this here. Join me in moving to @bluesky on this account @jansenjohannes.bsky.social
Feel free to check these tips attached for a smooth transfer of your account #Xitter #bsky – at Ghent, Belgium
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jansenjohannes.bsky.social retweeted
Marsh Harriers have recovered from 1 breeding pair in 1971 to 400+ now, a rare good news story for UK raptors. A winter highlight is watching them coming into roost, latest count 144. When blustery they take longer to settle, a spectacular sight as on mass they take to the air.
jansenjohannes.bsky.social retweeted
New study explores individual variations in Natal Habitat Preference Induction in red kites. Using integrated step selection functions, we delve into how early experiences shape habitat preferences across landscapes. Discover more in @SciReports! #NHPI nature.com/articles/s41598-0…
jansenjohannes.bsky.social retweeted
📣The suspend hunting from 2021 has allowed a population recovery in Turtle Dove!
A paper published in Conservation Letters today shows the population response in terms of breeding numbers after the first two seasons of the moratorium.
Read more: pecbms.info/science-based-ad…
jansenjohannes.bsky.social retweeted
📢NEW STUDY describing the first full-season spring raptor migration counts in the eastern Black Sea flyway!
Read about seasonal contrasts in raptor migration, the eastern Black Sea coast as a principal spring flyway, and much more.
Preprint➡️biorxiv.org/content/10.1101/…
1/9🧵👇
ALT Black Kites in front of the Batumi skyline. One of the most abundant species in at Batumi in spring.
jansenjohannes.bsky.social retweeted
NEW PAPER in #ornithology provides a tool to identify nesting and success from #telemetry data using #raptors as an example
Paper: buff.ly/4h9mpGL
R-package: buff.ly/3UclmMs
App to find nests in the field: buff.ly/3Y2db6E
jansenjohannes.bsky.social retweeted
Neonics blijken ook voor vogels schadelijker dan verwacht #neonicotinoïden #neonics #vogels @vogelinfo vilt.be/nl/nieuws/neonics-bl…
Inspiring #LIFE platform meeting on result-based payments to increase biodiversity in agriculture, getting to know many good pratices and pitfalls during three days of intense exchange.
@INBOVlaanderen @natuurenbos
lifeb4b.be/life-platform-mee… – at Aalst, België
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jansenjohannes.bsky.social retweeted
Nieuw onderzoek van @WUR over de effecten van neonicotinoïden op (boerenland)vogels.
Het is geen fraai beeld.
Intussen zijn de meeste "neonics" verboden bij ons. Van de onderzochte neonics is acetamiprid nog in gebruik in BE (vooral fruitteelt). onlinelibrary.wiley.com/doi/…
jansenjohannes.bsky.social retweeted
The native grasslands on which grassland birds depend are the most endangered habitat in the country. Without substantial conservation action, many of these species are at risk of disappearing.
Learn more: StateOfCanadasBirds.org
Art by Shaylena Stenback
#stateofcanadasbirds
jansenjohannes.bsky.social retweeted
Voor de boerenlandvogels mag er ook geen achteruitgang zijn tegen 2030. De lat wordt voor hen geïndexeerd op 1 september volgend jaar (2025). De trend de voorbije jaren was negatief. Ook hier moeten alle nodige maatregelen genomen worden om dit te keren. 3/x
jansenjohannes.bsky.social retweeted
Saturday we tweeted it was only a matter of time before a GPS-Spoonbill would cross to England. We didn't realise that while writing, Spoonbill STORM (ring: NH45) was flying from @hetzwin 🇧🇪to Poole Harbour @harbourbirds 🇬🇧! 😱 Here' a bit more about this landmark moment.👇 1/9
Perhaps unbelievably, but it wasn't with foresight that we wrote about UK movements as being a matter of time'! As it was written, #spoonbill STORM had arrived in .... Poole Harbour!!! It was ringed on #Schiermonnikoog in May, gave up nesting attempt, and explored.
@WGLepelaar
jansenjohannes.bsky.social retweeted
Our new paper led by Braeden Van Deynze shows insecticides are a leading driver of butterfly decline in the US Midwest, above climate and land use change. doi.org/10.1371/journal.pone…
This fledgeling #cornbunting perched in the roadside for a short time, but long enough for a picture, two days ago near Ezemaal, Belgium. It´s a nice reward after a long morning of studying these threatened farmland birds. @INBOVlaanderen @grauwegors @grauwekiek @vzwVeldwerk – at Tienen, België
ALT Corn bunting fledgeling near Tienen, Belgium
This time of the year, a first wave of young corn buntings are leaving the nest. They still depend on their parents for several days, the male trying to keep them safe and the female is still feeding them for a week. We study the foraging behavour by observing
#protocol #veldwerk – at Tienen, België
The species is very threatened and only occurs in a few remaining populations that still hold on in Flanders. During a citizen science weekend #kiekngors about 50 to 60 territories were found in total, their future is uncertain and heavily relies on nest protection and feeding. – at Tienen, België
This fierce #partridge was protecting his nest, by trying to chase these two crows. We were able to observe this when pinpointing another corn bunting territory near Nieuwkerke, @provinciewvl Belgium. @INBOVlaanderen preparing for #kiekngors by @vzwVeldwerk – at Ghent, Belgium
This cinereous vulture disturbed fieldwork today, after an Egyptian vulture did the same one hour and a half before. Over a skylark study site near Wuustwezel (Antwerp), I wasn't expecting these two to pop over... Phonescope shots were the best I could do to document this one.
Details are on @waarnemingenbe waarnemingen.be/observation/… and on this @Team_eBird checklist: ebird.org/checklist/S1742382…
The adult Egyptian was not seen again, the young Cinereous vulture was seen along a northeastern route further up the Netherlands (Breda, Oosterwijk and Zwolle).
Its route could be followed nicely on @waarneming with a first resighting one and a half hours later over Breda (NL) by Thomas Luiten ao: waarneming.nl/observation/30…
At 14h15 ten north of Waalwijk: waarneming.nl/observation/30…
And around 16h45 above Zwolle: waarneming.nl/observation/30…
