An Interesting Chiffchaff

At Marloes Mere this evening an interesting Chiffchaff singing in the willows that run alongside the field beyond the Britton Hide. When you reach the gate into the cow field, the bird was singing about 50m further on, on the right hand side. I saw it only briefly as it flew, but it was singing from cover. After consultation with Paul G via mobile who played some Iberian Chiffchaff songs to me, I concluded it clearly wasn't one, but a lesson nonetheless in knowing what's possible (there have been 4 in the UK this spring, including a first for Wales in Gwent) and what you are listening for! For information, the Marloes bird went consistently "chiff-chaff-chaff" with a frequent "do-do-do-do" to finish (or something like that!). Iberian Chiffchaff sounds like this:

http://www.xeno-canto.org/europe/browse.php?query=Iberian+chiffchaff

Happy listening. Iberian Chiffchaff has to be a good candidate for the Pembrokeshire list.