Like Steve (Tavascarow) I struggle with Warblers - could he be an Icterine Warbler (Hippolais icterina) perhaps? A bit of a guess really.
Great picture - you have captured him so well Benny!
i googled what biggles said; yup, that looks like him/her.
i think you need to take your bird photo skills up to alaska, benny. (pick me up on the way, will ya? :>)