Bitterns are skulking, rare (in Britain) birds of large reed beds, a typical veiw is of one flying away over such beds before plonking down out of sight. However Bitterns also arrive from the Low Countries to winter here, and these birds tend to find and use smaller areas making them a bit easier to see. One such bird has taken up residence on Beeston Common pond in Sheringham (apparently for the past couple of weeks) and is feeding quite happily on the frogs and toads within 10 yrds of doggy walkers, and now of course camera toting birders! If anyone ever wanted to see a Bittern, this one is probably the best chance you're gonna get, you don't even need binoculars!
The Beeston Bittern, camoflaged to perfection