I think this is the longest tail I've ever seen on a long tailed tit...
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Certainly is caudatus! I do see these extra long tail feathers, not that uncommonly, in juvenile Long-tails, when ringing at this time of year. This one is pretty extreme, though!
My Flickr photos...
Lat/Lng: 51.95765372803, -0.25604825019832
OS grid ref: TL199302