Vincent13 nov. 20181 minutenTristis: not always a peep showpics © Marijn van Oss & Jorrit Vlot sound © Thijs Fijen Earlier I wrote about Siberian Chiffchaffs with common Chiffchaff calls (here)....
Vincent25 dec. 20172 minutenBoxing Day: ageing Black-necked Grebe25 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...
Vincent22 dec. 20171 minutenThe look-alike that turned out to be a tristis after all. Maybe. I think so. Right?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...
Vincent27 jul. 20172 minutenageing a calling Iberian ChiffchaffOn 14 July I stumbled upon a calling Iberian Chiffchaff (ca 45th record) in my hometown The Hague. Since calling birds are probably...