I was checking out Roy Harvey's video of UK rarities http://surfbirds.com/forum/showthread.php?t=2593, where I watched with interest his video of the putative Moltoni's Subalpine Warbler. It is a shame this elusive bird was so quiet, and I know of few people that say they heard it call. One thing is certain,having seen this and many abroad and at Tring, the colour of the underparts does not seem to meet my expectations of what moltoni looks like.
The colour of moltoni below is a dusty pink, and being an adult male the Norfolk bird should be fairly typical in colour even if it is obscured by pale fringes. If you check out the video and the images of the bird posted on surfbirds UK stop press photo gallery, you will see that the colour is distinctly orange on all images. The colour is consistent and extends along the flanks. besides this there is no colour difference to go on - there is a tendency for the colour of the upperparts to be the palest grey of the four Subalpine subspecies.
The call is very important, but I would like to hear a recording of it, so if any does have video of the bird calling or singing then please post it - it would certainly help.