Marcel E. Visser

Figure 1 in Linssen et al. (2025): "Spring migrations and tracking data of five Arctic-breeding waterfowl species."

New publication: Scope for #waterfowl to speed up migration to a warming Arctic. #climatechange #avianmigration
doi.org/10.1038/s415...

Fully funded PhD working on insectivorous bird declines with a broad range of stakeholders. Starting ASAP #ornithology #zoology #biodiversity #science #ecology
www.exeter.ac.uk/study/fundin...

Thanks Milos & Peter for organising this wonderful meeting!

Thanks Milos & Peter for organising this wonderful meeting!

PhD position available to study the migration ecology and year-round demography of blackpoll warblers.

Come and join the LTER-LIFE infrastructure

Please help us spread the word! Please amplify!

We are searching for an associate or full professor (Canada Excellence Research Chair) in Biodiversity Genomics at the University of Guelph! 🐟🌿🦠🐜🐸🐝

Applications are due October 6 2025.

careers.uoguelph.ca/job/Guelph-C...

#AcademicJobs #EvoBio

Postdoctoral researcher: avian microbiomes and reproduction We are looking for a postdoctoral researcher to join our team working on avian reproductive microbiomes at the Netherlands Institute of Ecology (NIOO-KNAW) in the group of Dr. Melissah Rowe. The postd...

3.5-year #Postdoc position on avian microbiomes and reproduction @animalecol-nioo.bsky.social @niooknaw.bsky.social on a fully-funded ERC project focused on understanding the significance of reproductive microbiomes for host biology and fitness. Reach out for more info!

nioo.knaw.nl/en/vacancies...

Postdoc Goose Impact We are looking for a postdoctoral researcher for research in the context of international adaptive management of geese. Did you analyse animal movement patterns during your PhD? Do you want to work wi...

NIOO is looking for a #postdoctoral researcher for #research in the context of international adaptive management of geese. Did you analyse animal movement patterns during your PhD? Do you want to work with goose transmitter data? Apply by 1 September: nioo.knaw.nl/en/vacancies... #vacancy #vacature

Postdoctoral researcher: avian microbiomes and reproduction We are looking for a postdoctoral researcher to join our team working on avian reproductive microbiomes at the Netherlands Institute of Ecology (NIOO-KNAW) in the group of Dr. Melissah Rowe. The postd...

We are looking for a postdoc to join our group to work on an ERC funded project on avian reproductive microbiomes. nioo.knaw.nl/en/vacancies...
Please RT! #microbes #microbiomes #sparrows #postdoc

The WildCo Lab @wildco.bsky.social is recruiting 2 postdocs in quantitative ecology to work on mammal population estimation and monitoring from camera trap data. 🐺🐻🦌📷📈
Please share the word or apply to join us at UBC in lovely Vancouver, Canada!
wildlife.sites.olt.ubc.ca/files/2025/0...

Figure 1 in Charvalakis et al. (2025): "Experimental design; 2 × 12 light traps (fitted with four differently coloured LEDs with three intensities) were placed at each side of a forest road. The order of light colour and intensity was randomized within each roadside. Insect trapping was done during 11 non-consecutive nights (minimally one night in between) during July and September."

New publication: Intensity and colour of artificial light at night affect insect attraction in a taxon-dependent manner, by @mevisser.bsky.social and others. #biodiversity #lightpollution #ALAN #artificiallightatnight
doi.org/10.1111/icad...

Figure 2 in Hermans et al. (2025): "The setup at one of the sites (Makkum) with the four light spectra (A-B: Red Clearfield, C-D: Amber, E-F: White 2200 K and G-H: White 3000 K) at two light intensity levels (A,C,E,G: 5 lx and B,D,F,H: 20 lx). The experimental lamp post was placed at the centre of the bridge against the railing, projecting light on the water surface of the waterway on the side where bats were approaching when flying from their roost site to foraging areas in the evening. The microphone array was placed next to the lamp post facing towards the approaching bats. Photos by Laura Kijm."

New publication: Limited immediate effect of #artificiallight of realistic intensity on flight behaviour of commuting #pondbat, by @mevisser.bsky.social and others. #Myotisdasycneme #ALAN #behaviouralecology #lightpollution
doi.org/10.1016/j.ba...

Thanks @babimt.bsky.social for leading this paper!

Meet the keynote speakers for the first eLTER Science Conference! A special booklet presenting the prominent researchers, also with links to their abstracts: 🔗 elter-ri.eu/storage/app/...
See you very soon in Tampere! #eLTERcommunity 🩷

Temperature amplifies the effect of anthropogenic light on foraging common pipistrelle bats | Biology Letters Anthropogenic light affects the presence and behaviour of many species. Bats are generally repelled by light, but some fast-flying and agile species opportunistically forage on insects attracted to li...

New publication: #Temperature amplifies the effect of anthropogenic light on foraging common pipistrelle #bats. By @mevisser.bsky.social and others. #lightpollution #lightspectrum
doi.org/10.1098/rsbl...

Postdoctoral Researcher: Contribution of genetic background and gut microbiome on thermal physiology A post-doctoral Researcher position is available at the Department of Biological and Environmental Sciences, University of Jyväskylä, Finland, in the group of Dr. Suvi Ruuskanen. The post-doctoral res...

3-year #Postdoc position on the role of #genetics and #microbiome on #thermal #physiology in @erc.europa.eu project in my group at @uniofjyvaskyla.bsky.social FIN! We establish #selection lines on quails, collab @btschirren.bsky.social DL 15.7., start Nov25-Jan26
ats.talentadore.com/apply/postdo...

Great opportunity

„Timekeeping in hole-nesting birds under extreme light conditions” is the title of the plenary by Barbara Tomotani @babimt.bsky.social.

A fitting topic for Olomouc, where the astronomical clock has kept time since medieval days. The avian clock, though, likely resembles the sundial more closely.

The breeding season in our nestbox sites is in full swing! The pied flycatchers arrived last couple of weeks and started their breeding season. Meanwhile in most boxes with blue tits, great tits and nuthatches they are already at the incubation or chick stage. #breedingseason25

New position open! 🚨 We have a PhD position on avian reproductive microbiome available at the department. Find more information in the post from @melissahrowe.bsky.social or here nioo.knaw.nl/nl/vacatures...
Deadline 29th of June.

new preprint: ecoevorxiv.org/repository/view/9055

Code used in research is key to the methods and scientific output and we should ensure it’s not just "available" but easy to verify and build on.

We present a practical tool to code review for scientists 🧪

work with @animalecol-nioo.bsky.social

Take a look at a short overview of past HNB meetings and a group photo from the 5th conference, which celebrated the 50th season in Vlieland. Thanks to @mevisser.bsky.social for sharing this!
Join us in Olomouc to celebrate the 53rd season in Dlouhá Loučka and the 29th in Velký Kosíř!
#ornithology

✨ New study ✨

📍 Westeinderplassen, Netherlands
👷 Marcel Visser (@mevisser.bsky.social)
🏦 NIOO-KNAW (@niooknaw.bsky.social)
🐦 Eurasian coot
🔗 nioo.knaw.nl/en/projects/...
📑 metadata only

A plot the date of the first great tit egg on Vlieland against year showing 2025 is the third-earliest year since 1955.

Last year I posted too early and had to retract my post 🫣, but now that all @niooknaw.bsky.social @animalecol-nioo.bsky.social nest boxes on #Vlieland have been checked, we know for sure that it is - yet again - a very early start of the breeding season! @uniexecec.bsky.social @sevans.bsky.social

eLTER Science Conference 2025 announces its programme The official programme for the first eLTER Science Conference is now live! From 23rd to 27th June in Tampere, Finland, over 300 participants will meet to exchange knowledge, tools, and ideas unde...

🌍 #eLTER2025SC #BiodiversityDataJournal

👋

Interested in working on the evolution of genetic architecture 🧬 of complex traits using linked-read sequencing of thousands of common lizards 🦎 from a wild population and common garden experiment?

#evolution #genetics

Well, I have a PhD offer for you 👇
devillemereuil.legtux.org/erc-funded-p...

Temperatures are rising in the Netherlands and despite the very cold nights the first birds are laying eggs! 🥚🥚 First Great tit egg in the long term study this year was 30th of march which is a week later then the record first egg we had last year #breedingseason25

Photo of a freshwater lake

Looking for a PhD? There is an opening for a PhD-student in evolutionary ecology on phenotypic plasticity in aquatic organisms at NTNU in Trondheim, Norway – with two super-good supervisors (Sigurd Einum and Tim Burton) - highly recommended! www.jobbnorge.no/en/available...