At last I have seen a photo of the Lesser Whitethroat on St Agnes - http://www.surfbirds.com/media/galle...1031032249.jpg.
The first time I saw one of these was at Fagbury Cliffs a good few years ago, which was trapped and David Pearson thought might be halimodendri. I'll not forget seeing it in the field and being amazed at its appearance, especially as it called like a Blue Tit.
Are there any more images of the Scilly bird, or anyone that would like to comment?
Martin Garner has posted on one on Unst recently - http://birdingfrontiers.com/2011/10/...r-whitethroat/