Bit of a shocker from the BBC. I think as licence payers we should be expecting articles like this to be reasonably accurate "The bird, known for its booming call, is commonly found in the freshwater reed beds of Suffolk and Lancashire"
To be fair, the immedate sentence before does state the UK population to have grown "from a low of 11 males in 1997 to at least 51 recorded by the RSPB and Natural England last year." So, in full context, not that inaccurate.
As far as booming males are concerned in North-West England (Lancs, Cheshire, Cumbria, Merseyside and Gtr Manchester) there was a 100% increase in 2007. So we now have 2 booming males in an area of just under 5,500 square miles. For the BBC to refer to Bitterns as being common birds in the reedbeds of Lancashire is simply wrong.