Marsh Warbler at Stockers

On the 9th rushed off to Stockers along the River Colne whereI had been reliably informed of the appearance of a Marsh Warbler (Acrocephalus palustris).
On arrival I saw a guy taking a sound recording and Paul Frost who had photographed it yesterday .
A good contingent of birders were present i.e. Christina Bessant Dale Ayres,Roger Harbird ,Tony Hulls,Kevin Farrell,Chris Sharp and of course Lee Evans.
Too be fare call was good but not exactly crippling views but a Herts tick for me and a lifer for Lewis.