pics © Marijn van Oss & Jorrit Vlot sound © Thijs Fijen Earlier I wrote about Siberian Chiffchaffs with common Chiffchaff calls (here)....

25 December. Boxing Day! Rinse and I don't need much time to think when were asked to ring a few birds in bird hospital De Wulp. The star...

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...

On 14 July I stumbled upon a calling Iberian Chiffchaff (ca 45th record) in my hometown The Hague. Since calling birds are probably...

Spring 2016 was mind-blowing: good migration, loads of rarities and a few nice influxes due to seemingly never ending easterlies. But...