I believe it has been present for around a week Jeff, I saw (and heard) a good tristis candidate on Saturday am along the discovery trail, and spoke with Dean Reeves who’d had probably the same bird a few days previously. Just over the road Tom Raven has had a Yellow-browed warbler near to the Avalon hide for the last 2 days, perhaps the winter will reveal a few more (rarer?) waifs…

17-Dec-2019
Per Twitter today: Siberian Chiffchaff on Shapwick Heath, 200 yds west of Ashcott Corner car park.