Brian,
Just out of interest and so as to give some background to the sighting, is it possible on your LWT admin net to discover the details of the original report to LWT of the recent Greetwell Hollow Dipper/presumed Black-bellied ?, of Lincs 'vagrant' status : on Wed 29th Feb = + 4 days now.
I am sure it would be of some interest to those LBC birders who have been/are still going for the bird to know that the original report was along the lines of......"I had good views of a Dipper/BB curtseying on a rock before it flew upstream; I have previous experience of the bird."......or was it along the lines of.....????
Hopefully, the reported bird is still around and will be seen again in the near future.
Freddy