My old buddy Pete Campbell, who divides his time between Northants and the Isle of Wight, sent these images of a Lesser Whitethroat taken in his garden on the island on 7th March. It has been present daily since January. This looks all the world like a standard grey and white curucca therefore we should not assume that all wintering Lesser Whitethroats are of eastern origin. Compare it here with our Northampton bird.
Northants birds 