Arnhem AEB413

18 October 2014, Meijendel, Wassenaar, the Netherlands

© 2018 by Vincent van der Spek

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14 Aug 2019

When the ladies from bird hospital De Wulp sent me the shots of the Grey-cheeked Thrush taken into care last year, it really knocked me off my feet for a few seconds. But when Rinse and I received this video mid-July we were equally shocked: 

(video by Sharon Lexmond / vogelopvang De Wulp)

Black Woodpeckers colonised the country around 1915 and reached the western part of the Netherlands half...

22 Mar 2019

The 2018 ringing report for Meijendel, Wassenaar is out now! 

Download here (pdf; 4 MB; in Dutch only)

English summary

When the first day of a year sees the highest number of birds ever trapped for a snowless winter's day (exactly 100), and one of these birds is a new species for the site (Coues's Arctic Redpoll), than that's nothing short of an amazing start. Partly due to two late cold spells in Ma...

10 Nov 2018

There's a big if  - but another big redpoll invasion could be in the making.

The if depends on stuff like weather conditions, and the exact turn the majority of the wandering birds in Europe will take. But it's obvious that at the moment, a higher number of birds than usual is passing through. And they are early! 

The thought alone is thrilling - two large invasions in a row would be unprecedented ...

13 Apr 2018

First proof that it's the nominate subspecies of Hume's Leaf Warbler that reaches Europe.

Aerobics, the final countdown and warbler taxonomy

Back in the 80s, Hume's Leaf Warbler was still considered a ssp. of Yellow-browed Warbler. Since then not only our hair fashion and taste in music has improved, but also our insights in leaf warbler taxonomy. There are significant genetic, morphological and aco...

8 Mar 2018

Probable Russian Common Gull, 5 February 2012, Meijendel, Wassenaar, the Netherlands

I don't like using measurements as a diagnostic feature to ID sexes or subspecies. Last week was no exception.

After another mild winter, an unusual late cold spell hit the country early March. Temperatures dropped to minus 8 C, combined with a 7 Bft easterly. At the very end of winter... that's just killing. Litter...

16 Jan 2018

With the current redpoll invasion in Europe, it was time to spend some words and pics on these wonderful birds.

Redpolls all the way from China

Even though it's already been 12 years since we trapped a Mealy Redpoll with a Chinese ring in Meijendel, I stil cherish that moment! Triggered by a recent control of a Chinese ring in Denmark, I made an overview of all European - Chinese recoveries of Meal...

22 Dec 2017

Right. Chiffchaffs never stop to amaze me. But I now feel we're really getting somewhere.

Only very recently Peter de Knijff and I wrote something about Siberian Chiffchaff look-alikes on this site. The upper bird in that little web article looked like a tristis, but IMHO it was not an exact copy. Something looked off. So I ringed it as a Common Chiffchaff, without specifying the ssp. 

More signific...

11 Nov 2017

Autumn 2016 was nothing less than perfect. But this autumn, well... it was a bit boring to be honest. I missed most good vis mig days, ringing was often impossible due to unfavourable weather, and I hardly saw anything notable in the field. The Hawfinch an Parrot Crossbill invasions were the rare highlights.  

But since November, things seem to have changed a bit. A self-found Richard's p...

2 Nov 2017

There are probably not too many primary moult scores for Great Skuas from Holland. But I've got one now!

Since we usually only see them on migration, at a fair distance, and immatures are in the majority, it was quite a privilege to study an adult at close range (upper pic: Sharon Lexmond/ De Wulp).

This bird was taken into care at bird hospital De Wulp in September. Just note how bleached and worn...

27 Jul 2017

On 21 June Gijsbert Twigt and I trapped a Spotted Redshank in Meijendel, Wassenaar - the first one ever to be ringed at the site, where ringing started back in 1927.  

 This bird is obviously in sum plum and given the time of year, it's never gonna be a juvenile of course.

 Note the fairly fresh primaries. 2nd calendar year (cy) birds have very worn primaries, so this bird must be older.

It has of...

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