Blog reader Tim told e-mailed me to ask:
"I was wondering if anyone living at the top end of Worcester Park high street has noticed and is becoming extremely tired of some repetitive bird noises?
I have been advised it is a gadget that is designed to deter the pigeons off the roofs near More Than Lofts/Stitch Express.
It is an increasingly annoying, repetitive, squawk that is intended to replicate the sound of a bird of prey (I can only assume).
Please make it stop!!"