Chiffchaffs seem to be the flavour of the month with good numbers at various popular sites in Cornwall. The photos below were all taken at Helston last week where I counted about twenty. (At nearby Carnon Downs sewerage works, Mark Grantham ringed forty birds). Included among the twenty are a couple of paler tristis type birds. Tony Blunden also mentioned to me that they responded positively to song. The upper two images are standard, warmer more olive coloured Chiffchaff and the lower three are the paler tristis type.