This is a northern waterthrush video from North America.
18 September 2010.
Probably, it got lost during its autumn migration from North America to Central or South America. Some enthusiastic birders today specially went by boat to Vlieland to see the newcomer. UPDATE: On Sunday, next day, over a 100 birders came with the first boat to Vlieland.
Update: the bird is gone now.
And two chiffchaff. Their migration to northern Africa may have to start yet.
About the influx of Lapland Buntings in August and September: here.