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Ophrys, thank you, you are so helpful; this is all quite new to me; Lynda
It's a Willow because it is quite bright yellowy below (Chiffchaff is duller) and has a supercilium (line above eye) which gets wider behind the eye (fades out in Chiffchaff). Also, the legs appear quite pale (dark in Chiffchaff) and the area below the eye is pale (darker on chiffchaff).
Great photos, by the way!
My Flickr photos...
Thanks for the comment about the photos. (Canon SX30). What I like about your replies is you say why it's the bird it is (and not the bird I normally think it is, lol) so I know what to look for in the future. Lynda
Lat/Lng: 52.9625, -1.0488
OS grid ref: SK639409