Hendrik Walcher
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birdsound.bsky.social
Hendrik Walcher
@birdsound.bsky.social
Freelance biologist and ornithologist exploring how sound and data can support conservation. Current research on Passive Acoustic Monitoring (PAM) and biodiversity in Peru and Paraguay. Master student
@bokuvienna.bsky.social
Reposted by Hendrik Walcher
Als Teenager überlebte sie als Einzige einen Flugzeugabsturz im peruanischen #Regenwald. Heute kämpft Juliane Diller gegen illegale Goldgräber – um das Lebenswerk ihrer Eltern zu retten. ‪
@hilwiller.bsky.social hat sie getroffen: www.riffreporter.de/de/internati...
November 19, 2025 at 4:10 PM
Reposted by Hendrik Walcher
"Our findings confirm the presence of a NIMBY effect on renewables, with landscape considerations emerging as a key factor. However, targeted communication about climate benefits and local financial gains, as well as implementing smaller-scale projects, significantly reduces resistance."
Mitigating the NIMBY effect on renewable energy: Experimental evidence from survey-based interventions in Catalonia
The deployment of solar and wind power plants is widely supported in principle, yet local communities often resist when such projects appear in their …
www.sciencedirect.com
October 30, 2025 at 2:54 PM
Reposted by Hendrik Walcher
New(ish) paper; huge collaboration led by Aaron Skinner!

Using GPS tracking we show breeding grounds drive body size variation more than wintering grounds! First evidence that nightjars follow Bergmann’s rule👇

onlinelibrary.wiley.com/doi/10.1111/...

#nightjars #birds #migration #ornithology
October 30, 2025 at 2:48 PM
Reposted by Hendrik Walcher
Gradual variation in vocalizations does not support multiple species within the White-shouldered Antshrike (Thamnophilus aethiops) | link.springer.com/ar... | Journal of Ornithology | #ornithology 🪶
Gradual variation in vocalizations does not support multiple species within the White-shouldered Antshrike (Thamnophilus aethiops)
Journal of Ornithology - The White-shouldered Antshrike (Thamnophilus aethiops) is a widespread Amazonian suboscine bird with ten plumage-based subspecies showing deep mitochondrial genetic...
link.springer.com
October 28, 2025 at 1:30 PM
Reposted by Hendrik Walcher
Check out pypi.org/project/xeno... where you'll find xcapi: a Python package for downloading animal sounds using the Xeno-canto API. Courtesy: Burooj Ghani (of AvesEcho etc. fame). #bioacoustics
October 27, 2025 at 9:46 PM
Reposted by Hendrik Walcher
Optimizing passive acoustic monitoring (PAM) for biodiversity studies: Using species–area relationship (SAR) to predict species richness | doi.org/10.1093/orni... | Ornithological Applications | #ornithology 🪶
October 21, 2025 at 3:36 PM
Reposted by Hendrik Walcher
📣 CALL FOR PAPERS 📣

Special issue:
FROM CHIRPS TO INSIGHTS: PASSIVE ACOUSTIC MONITORING FOR APPLIED ORNITHOLOGY

More info: vist.ly/46pfg

Guest editors: Jan O. Engler, Jenn Foote, <a href="https://bsky.app/profile/did:plc:g27o3ttbhwno6sjns7wwl3yg" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky-mention">@silvereyedom.bsky.social , Simon Thorn

#ornithology #birds 🪶🧪
September 13, 2025 at 2:24 PM
Reposted by Hendrik Walcher
If You're Rare, Should I Care? How Imperfect Detection Changes Relationships Between Biodiversity and Global Change Drivers 🌎🌐🧪 onlinelibrary.wiley.com/doi/10.1111/...
If You're Rare, Should I Care? How Imperfect Detection Changes Relationships Between Biodiversity and Global Change Drivers
In this article, we provide a modeling approach that accounts for imperfect detection of species, especially rare ones, in biodiversity studies. Using three case studies across diverse taxa (birds, i...
onlinelibrary.wiley.com
September 10, 2025 at 12:17 PM
Reposted by Hendrik Walcher
Happy to share a new peer-reviewed study on PubMed. Blessing eggs creates bigger and tastier chickens (p < 0.001). pubmed.ncbi.nlm.nih.gov/41035978/
October 22, 2025 at 11:48 PM
Reposted by Hendrik Walcher
Secondary seed dispersal by migrant harriers in India | doi.org/10.1002/oik.... | Oikos | #ornithology #RaptorResearch 🪶
October 20, 2025 at 5:03 AM
Reposted by Hendrik Walcher
This year marks the 100th birthday of #bioacoustics, established by Ivan Regen in 1925, which studies how animals hear, produce and propagate sound.

Let’s discover this discipline with @nicolasmathevon.bsky.social, Professor of Saint Etienne University, in the first episode of Acoustic World.
October 20, 2025 at 6:33 AM
Reposted by Hendrik Walcher
🚨 Excited to share our new research! 🚨

We tackle a big question in conservation: how can we make smarter use of existing surveys to learn about places and species we haven’t yet been able to survey? 🏔️

🔗 Read the paper here: doi.org/10.1111/2041...
October 21, 2025 at 12:19 AM
Reposted by Hendrik Walcher
“Jetzt hat ein Recht auf seine eigene Meinung, aber nicht auf seine eigenen Fakten.“ (Patrick Daniel Moynihan)
Gilt auch für „Star-Philosophen“.
Die „Gottes Volk“-Geschichte ist schlicht ein Holler:
www.straightdope.com/21343101/doe...
(Danke für den Hinweis, @drct.bsky.social!)
Ich hab ein bisschen Angst, wieder in so eine Faktencheck-Situation mit Richard David Precht zu geraten, aber kann es sein, dass es für das, was er hier im österreichischen „News“ behauptet, einfach gar keine seriöse Quelle gibt? (Und wie würde man das überhaupt gestikulieren?)
October 17, 2025 at 10:48 AM
Reposted by Hendrik Walcher
Using automated acoustic monitoring, citizen science, and centuries of ornithological research and understanding to quantify ecological integrity at scale.

The BirdsPlus Index, a novel method for assessing site-level conservation values.

www.biorxiv.org/content/10.1...
October 16, 2025 at 4:16 PM
Reposted by Hendrik Walcher
New research carried out in Colombia by the University of Cambridge suggests that local surveys assessing the effect of land clearances on biodiversity may be underestimating the impact by as much as 60%.
Biodiversity loss due to land use change could be highly underestimated: Study
A survey of Colombian birdlife, which evolved over more than a decade into the world’s largest-ever ornithological study, has found that clearing forests to create new pastures is causing as much as…
news.mongabay.com
October 15, 2025 at 6:18 PM
Reposted by Hendrik Walcher
Repost - DeepGreen on LinkedIn ⬇️

👂 Smart Passive Acoustic Monitoring: Embedding a Classifier on AudioMoth Microcontroller

#Bioacoustics #FrugalAI #Seabirds #PAM #Acoustics
#bioacoustics #frugalai #seabirds #pam #acoustics | DeepGreen
👂 Smart Passive Acoustic Monitoring: Embedding a Classifier on AudioMoth Microcontroller 👉 At the 13th National Seabirds Meeting in Bonifacio, Corsica (October 15–17, 2025), DeepGreen and BioPhonia w...
www.linkedin.com
October 14, 2025 at 8:06 AM
Reposted by Hendrik Walcher
Wildtierkriminalität bleibt ein Dauerproblem in 🇦🇹: Im Mai wurden 3 vergiftete Rohrweihen & ein Kaiseradler gefunden. Der Angeklagte wurde heute freigesprochen. Es braucht jetzt einen Aktionsplan mit strengen Maßnahmen gegen Wildtierkriminalität! @birdlife.at
Vögel vergiftet: Freispruch für 87-jährigen Jäger
Am Landesgericht St. Pölten ist am Montag ein 87-jähriger Jäger vom Vorwurf, streng geschützte Greifvögel mit Gift getötet zu haben, freigesprochen worden. Das Urteil ist nicht rechtskräftig. Der Angeklagte hatte sich nicht schuldig bekannt.
noe.orf.at
October 13, 2025 at 1:20 PM
Reposted by Hendrik Walcher
Decoding Owl Calls: Refining Occupancy Inference From Passive Acoustic Monitoring | doi.org/10.1002/ece3... | Ecology and Evolution | #ornithology #RaptorResearch 🪶
October 13, 2025 at 6:14 AM
Reposted by Hendrik Walcher
🚨2025 #RedList Update🚨

We have reassessed 1,360 bird species. Out of the 11,185 species assessed worldwide: 

⚠️11.5% are globally threatened.

📉61% have declining populations.

But restoring habitats will help put these species on a path to recovery.🌱

Read more👉 www.birdlife.org/red-list-upd...
October 10, 2025 at 9:53 AM
Reposted by Hendrik Walcher
with the official IUCN listing for the slender-billed curlew now being Extinct here is the rather sad piece I wrote about what went into this decision

I tried to include everything we know about their behaviour and biology, which is tragically little 🪶🧪
www.nhm.ac.uk/discover/new...
October 10, 2025 at 10:09 AM
Reposted by Hendrik Walcher
🙋‍♀️ Veranstaltungstipp: Vom 08.-12. Oktober findet das innsbruck nature film festival (#inff) statt. Die Uni Innsbruck ist wissenschaftliche Partnerin des Festivals.

Programm und offizielle Website:
🦋 https://www.inff.eu/

Alle Events mit der Uni sind hier zu finden:
👉 […]
Original post on social.uibk.ac.at
social.uibk.ac.at
October 6, 2025 at 8:02 AM
Reposted by Hendrik Walcher
Why listen to animals?

A new Foley based production at London's Royal Court Theatre invites us into the sound-making world of animals, writes Giles Bailey

www.thewire.co.uk/in-writing/e...
Why listen to animals? - The Wire
A new Foley based production at London's Royal Court Theatre invites us into the sound-making world of animals, writes Giles Bailey
www.thewire.co.uk
October 8, 2025 at 11:17 AM
Reposted by Hendrik Walcher
Plastic pollution is widespread across the Amazon Rainforest’s rivers, plants and animals, according to a recent study.

To understand how and where plastic pollution is present within the basin itself, researchers looked at 52 field studies dating back to 2000.
First review of Amazon plastic pollution finds widespread contamination
Plastic pollution is widespread across the Amazon Rainforest’s rivers, plants and animals, according to a recent study. Previous research suggests up to 10% of total plastics in the ocean arrive…
news.mongabay.com
September 30, 2025 at 6:18 PM
Reposted by Hendrik Walcher
📦 GroupGets.com/devcase🎤The AudioMoth Dev Case is a waterproof, injection-molded shell designed for the AudioMoth Dev. It offers complete flexibility for hardware setup, featuring built-in mounts and slots to accommodate external microphones, GPS, larger batteries, and custom auxiliary boards.
September 30, 2025 at 9:46 PM
Reposted by Hendrik Walcher
💡 How can we build #AI models that generalize across species + tasks? 🐦🐋🐒

This is a fundamental question for our work at ESP and it’s the topic of our most recent paper and blog post: www.earthspecies.org/blog/what-ma...

🧵Read below for more👇
What Matters for Bioacoustic Encoding: A Practical Training Recipe for Building Generalizable Models - Earth Species Project
To better understand what matters for building a generalizable bioacoustic encoder, we tested 19 models across 26 datasets and a new evaluation benchmark. Our main finding is that a two-stage training...
www.earthspecies.org
September 16, 2025 at 7:16 PM