Horton Bank Country Park. The quietest it's been for a while; the explanation being a single brain celled doylem throwing a ball into the lake for his much cleverer dog to retrieve.
I did get some welcome noise from the reedbed; a Sedge Warbler singing it's socks off.
A Mute Swan was causing problems for a pr of Canada Geese. It seemed determined to harass their 4 offspring and followed them wherever they went.