Jan Hanzelka

Bird researcher

[Jan Hanzelka @JanHanzelka1]

Would you like to know which sites your tracked migratory birds used for breeding, for wintering and where they stopped over during migration? Check out the new App developed within the #HABITRACK project, available on the MoveApps platform https://t.co/BfZLbdNNI7

[Jan Hanzelka @JanHanzelka1]

We have investigated the effects of climate on breeding productivity of long-distance migratory birds across several European regions and revealed interesting seasonal and regional patterns. Read more in https://t.co/MfOFpb9jH3 @GEB_macro

[EOU Fledglings Meeting 2026 @FM_EOU_2024]

📅 Save the date!

4th EOU Fledglings Meeting will take flight in Prague, Czechia!

Join us 22-24 March 2024 for stellar keynotes, orals, posters, and networking.

Let's flock together! #EOUFledglings2024 #birds #ornithology🕊️🎉

Pre-registration: https://t.co/O1qL6Vlt9H

[Faculty of Science of Charles University @science_charles]

Are smaller fields better? For some birds, yes. Observations of Motacilla flava in Europe's largest #fields reveal that #birds chose sites with suitable crop height and structure of coverage, regardless of food supply. More in @ELSenviron's AGEE!

https://t.co/amEd7FApWG

(TŽ)

[Jan Hanzelka @JanHanzelka1]

Cavity-breeding birds occupy nest boxes and tree excavated cavities at higher rates in forest stands with specific structure. See our new article in Scandinavian Journal of Forest Research https://t.co/mb8x1NcKVl @ToniLaaksonen2 @Danielebaroni14

[Jan Hanzelka @JanHanzelka1]

What arthropods can live in bird nests and which nest types they prefer? Check out our new study to learn more 👉 Biodiversity and Conservation https://t.co/rVkLBjIAD5 @Danielebaroni14, @ToniLaaksonen2, Petri Martikainen, Tapio Eeva

[European Bird Census Council @_EBCC]

The increase in pesticides and fertilisers has led to the decline of many European bird populations, according to a new collaborative study based on the PECBMS dataset, including 28 European countries.
https://t.co/2XtYTbwllq

[Zdeněk Vermouzek went to bsky... @ZVermouzek]

Another White-tailed Eagle poisoning in Czechia 🇨🇿 This time a breeding female, the chick didn't survive 🖤 @birdlifecz register already 10 poisoned eagles this year.

[Česká společnost ornitologická went to bsky @birdlifecz]

Two nests of white storks attract the attention of ornithologists and public in Czechia thanks to unusual pairs. Two females nest together and care for their eggs - each laid 4.

On another nest, a male black stork was mating with a female white stork.

https://t.co/OXQY9Agd36

[PhyloPic.org @PhyloPic]

PHYLOPIC 2.0 IS OFFICIALLY RELEASED! Go check out the newer, faster, more useful PhyloPic here: https://t.co/fqfngyse1X

[UTU AnimalEcology @UTUAnimEcol]

We are recruiting a #postdoc to work on avian #movement and #dispersal #ecology @uniturku Come work with us! #ornithology #birds #behavior #populationdynamics #piedflycatcher
https://t.co/n8Ba49Q7A4

[Jan Hanzelka @JanHanzelka1]

For birds, #ivy can provide berries, nesting habitat etc. But it can also have a negative impact. In some of urban forests of #Prague, it covers trunks of hundreds of trees, including the old-growth oaks, which then cannot be used for excavating of tree cavities by woodpeckers.

[UTU AnimalEcology @UTUAnimEcol]

If you are participating in the virtual International Ornithological Congress #IOC2022 don’t miss our presentations: today online @idapenttinen @wielandheim @Danielebaroni14 @tonilaaksonen2 @janhanzelka, tomorrow @carinanebel and Thu @anttipiironen /TL

https://t.co/k1xtHNEgr4

[Jan Hanzelka @JanHanzelka1]

The invasive Caucasian #hogweed s decrease biodiversity, with a significant impact on birds. Find out which bird species cope with the invasion quite well, and which suffer the most, in our recent paper:
Emilia Grzędzicka, Jiří Reif
https://t.co/ssEXuFTxtb

[EURING @_EURING]

EURING is delighted to announce publication of the Eurasian-African Bird Migration Atlas https://t.co/SmUDkKWSWt based on @_EURING ring recoveries and tracks from @MovebankTeam The Atlas was developed in collaboration with @BonnConvention and funded by the Italian Government

[Jan Hanzelka @JanHanzelka1]

Today we celebrate the #WorldWildlifeDay. Large part of the extant species are endangered and many habitats have been severely deteriorated. Do we still have time for recovering the astonishing biodiversity of our planet? https://t.co/naHT2lN0nX

[Jan Hanzelka @JanHanzelka1]

The outgoing phase of the project "Biodiversity in natural cavities of boreal forests: the role of an ecological chain" is over. Thank you @UniTurku @UTUAnimEcol and many others for providing a very supportive a environment 💚🌲🐦🐞.

[Vojtech Brlik @VojtechBrlik]

A massive meta-analysis of #nest predation in songbirds.🐦🥚🐣🐤

Nicely fitting to our knowledge of biotic interactions and its spatial distribution but the temporal trend is frightening.📈

https://t.co/6Dlf5zk98w

#ornithology #birds

[Jan Hanzelka @JanHanzelka1]

The project "Biodiversity in natural cavities of boreal forests: the role of an ecological chain" is approaching its end. It means it is time to invite you to a short talk about the most interesting findings of our research.

If interested PM me for the Zoom link💻.

[Vojtech Brlik @VojtechBrlik]

Together with @rytikerttunen, S. Hahn and @RyanNorrisSci, we work on a project on carry-over effects in #birds.🐦

We are looking for collaborators! Details on the project: https://t.co/d1yqhxyYnh

Please spread the word and RT!

#ornithology #birdmigration #migration #phdlife