Vincent22 mrt. 20194 minuten2018 ringing reportThe 2018 ringing report for Meijendel, Wassenaar is out now! Download here (pdf; 4 MB; in Dutch only) English summary When the first day...
Vincent13 apr. 20183 minutenWarbler waffle: a scoopFirst proof that it's the nominate subspecies of Hume's Leaf Warbler that reaches Europe. Aerobics, the final countdown and warbler...
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...