This is what we certainly believe to be a tristis
This next bird was caught on the 17th Feb and was a retrap having originally been trapped here in 2009. Could it be a tristis? Not heard to call and quite a bit of yellow below but other features look good.
I saw the next bird in the field yesterday before we caught it and it certainly looked interesting but it's not a bird I had seen previously this winter. In the hand it called twice, a fairly typical Chiffy "huet" but sadly it wouldn't call again when I had the recorder ready so no sonograms unfortunately.
This last bird is not a tristis-type but was quite a striking individual