I think it’s only one bird it’s usually only morning and evening. The Merlin app does not recognise it. I live in Kent in the countryside. I have also searched and listen to many bird song and calls, but I haven’t found anything else like it. You hear it most at 0 seconds 6 seconds 20 seconds and 33 seconds
It sounds to me a bit like a green woodpecker, but not in full voice, more like when trying to start an old car on a cold morning!
oh Adam Thank you! I think you are right! I have quite a few red headed woodpeckers but only seen a glimpse of a green maybe once or twice. Is he/she calling for a mate? They go on for hours and hours!