when I camp out with my mates in the woods, kate at night around the fire we hear these unhuman screeches far away. It’s so bloody scary. Its like a bursts of screaming every 20 seconds and we get really creeped out. We think maybe it could be a bird but its such a scary screech, sounds like an old hag? Does anyone know any birds in england that could make this noise? We only ever hear it in these woods never anywhere else.? Anyone had any experiences or does anyone know what I mean?