Just had a BLYTH'S REED WARBLER in East London. Well I heard it anyway, and there were a lot of birders there talking amongst themselves. A great find by whoever it was. So when I left, there was some suggestion that it may be a Marsh Warbler. Good to question things I suppose. Played the clip at home, sounds like a Blyth's to me but I understand the argument.
Just got back from Poland where the birding was intense and gripping. Such variety. It felt free and unadulterated, but more of that later.