Van koevinkje tot oranje zandoogje: aantal dagvlinders in Vlaanderen met 38 procent gedaald sinds 1991 | VRT NWS Nieuws Het aantal dagvlinders in Vlaanderen is in 35 jaar tijd gemiddeld met 38 procent achteruitgegaan. Dat blijkt uit data van het Instituut voor Natuur- en Bosonderzoek (INBO). Sommige soorten doen het go...

Number of butterflies decreased with 38% in Flanders since 1991, especially grassland butterflies have a hard time: vrtnws.be/p.7n6kMkJxp
@inbo.be @natuurstudie.bsky.social

Numbers of Chequered Skipper (bont dikkopje, C palaemon) can fluctuate a lot, but the last few years have been bad for the species with a decline of 70% since 1990. Also distribution (=occupancy) declined with 30%. As a species of moist woodland it has a problem with dry summers.

Density of Brimstone (citroenvlinder, G rhamni) on Dutch Butterfly Monitoring transects this spring higher than in spring 2025, but also higher than in summer 2025 (and these are the same butterflies as they hibernate as adult). They probably hibernated (or aestivated) quickly after emerging.

The increase of the Orangetip (oranjetipje, A cardamines) on Dutch Butterfly Monitoring transects (=populatie) is partly due to the expansion of the species (=occupancy) by 30%, but also the density has gone up between 1990 and 2025. If you go out now, you have a good chance of seeing this butterfly

The last 20 years the 2nd generation of the Dingy Skipper (Bruin dikkopje, E tages) in NL has become larger and larger, with the peak of the first generation moving weeks forward.

The mean flight date of the Orangetip (A cardamines) is now more than two weeks earlier than in 1990 on Dutch Butterfly Monitoring transects, though there are large fluctuations from year to year, depending on spring weather.

Met de Samenhangende aanpak Landbouw, Natuur en Stikstof kiest ook de nieuwe Minister van Natuur voor mest, ammoniak, vervuiling en verder natuurverlies. Er zijn twee structurele tekortkomingen bij dit voorstel. open.overheid.nl/documenten/6...

Field margin with wildflowers that can support butterflies in arable farmland

Livestock grazing is essential to maintaining grasslands in the mountains of Europe. Extensive cattle grazing has been shown to be the most beneficial but any extensive system is good

Grassland butterflies are declining across Europe, but how do we reverse that trend? We have just produced a report with some simple guidance to land managers and policy makers on how to 'Bend the curve' and help increase butterflies and other pollinators. www.bc-europe.eu/webpage.php?...

2 EPIC Masterclass - Advanced Level 3 // Atlantic butterflies YouTube video by Butterfly Conservation Europe

In case you missed the excellent Masterclass by @chrisvanswaay.bsky.social on identifying butterflies of the European Atlantic region, you can watch it here on YouTube youtu.be/KuBSagkCWes

Update Maas
Nu en dan regen in stroomgebied, maar geen grote hvh. Afvoer vandaag naar ca 900m3/s, daarna dalend tot 800. 21-23/2 weer stijgend naar 1.000-1.100m3/s. Daarna weer dalend naar ca 750 m3/s. 27-29/2 mgl weer stijgend tot >1.000m3/s. Kans op groot hoogwater (>1.500m3/s) voorlopig klein.

Phengaris teleius (Scarce Large Blue) in a French meadow. One of the 17 species in the European Grassland Butterfly Index. Photo: Martin Warren)

The latest European Grassland Butterfly Indicator is out. It shows that grassland butterflies have declined by 47% since 1991, indicating a huge loss of grassland biodiversity. The data come from 16,150 transects & 15,000 volunteers. We are calling for urgent action. www.bc-europe.eu/documents/69...

Anything known about the trend in heath? There, I see a lot, maybe because of nitrogen depisition?

Putting this in context:
About 75% of Europe's Whimbrel breed in Iceland.
Over 50% of Europe's Dunlin.
About 50% of Europe's Golden Plover.
About 20% of Europe's Redshank.
SCARY!
#ornithology

Venlo was puik, woensdag 👌

I’m afraid things simply don’t change fast in the province of Limburg….

The slow expansion of the Marbled Fritillary (braamparelmoer, Brenthis daphne) in NL has surprised me, in B and D it easily moves 10-20km per year. Even in de SE the density is still relatively low. Apparently the quality of the habitat in NL is not good enough to move further north.

De wintervlinders zijn er weer. Die komen pas als vlinder uit de pop als het koud wordt en zijn de komende weken nog te zien. Als je in je koplampen lichte vlindertjes ziet fladderen zijn het die wintervlinders. Vrouwtjes hebben geen vleugels!! www.vlinderstichting.nl/vlinders/ove...

Front cover of the European Butterfly Red List, showing Polyommatus humedasae. The report can be downloaded at https://www.bc-europe.eu/webpage.php?name=red-list-butterflies-2025

The new European Butterfly Red List is published today, with worrying findings. Over 1/4 (28%) of Europe’s 442 species are threatened with extinction or are close to being so. The situation is far worse for our 148 endemic species, 40% are now threatened or nearly so www.bc-europe.eu/webpage.php?...

Vogelen met redactieleden Annemarie en Louise | Arjen zoekt een hobby | LUBACH YouTube video by LUBACH

Arjen gaat af en toe met redactieleden op pad, om te kijken wat er nou zo leuk is aan hun hobby. Vandaag gaat hij mee met Annemarie en Louise. En hun hobby is: vogelen! #LUBACH

Now the 2025 field season for butterflies has come to an end, it is a good moment to look back at the great work of the recorders of Dutch Butterfly Monitoring transects. Almost 400,000 butterflies counted in 2025 on 1372 locations, 8,5 million since 1990 on 212,327 km. Thanks for all hard work!

‘Middelengebruik: waar trekken we de grens?’ - Boerderij De landbouw, en met name de lelieteelt, ligt stevig onder vuur vanwege het middelengebruik. Het zou goed zijn als de sector zelf initiatief neemt

Als Caring Farmers maken we ons zorgen om de lelieteelt: de impact op de natuur en de imagoschade die deze geeft aan de gehele sector. Moeten we als boeren zelf geen grens stellen aan pesticiden gebruik? www.boerderij.nl/middelengebr...

Multi-generational vulture nests hold 700 years of human artifacts Crossbow bolts, sandals, slingshots, and more.

super cool study found human artifacts in Bearded vulture nests, incl. "weaponry like a crossbow bolt and wooden lance, decorated sheep leather, and parts of a slingshot....a shoe made from twigs and grass is ~675-years-old." link to paper: doi.org/10.1002/ecy..... www.popsci.com/environment/... 🧪🌍🦉

dierendag laat de Vlinder in je los

** dierendag

laat
de
Vlinder
in je
los **

Nog steeds worden er veel luzernevlinders gemeld, zowel gele als deze oranje luzernevlinder. Prachtige trekvlinders.

Jemig… dit is wel heel erg. Bijzonder dus dat ik er op 1 dag 2 zag…. 🥲

Saw only a few this year, but actually one today in Lomm

Same in the netherlands