Cetti's Warbler singing this pm in One Arch Marsh, the reed swamp upstream of the One Arch Bridge - heard from the northern perimeter path around Lodge Park wood, directly below a broken beech stump. This means that Cetti's has/have been heard along a 400 metre stretch of the reedbed - from directly below the site of Stackpole Court, below the "Hidden Bridge" and here, but only ever one at a time, as far as I know.
