Children

I can't recall who it was, but a while ago someone stayed over and during the night they couldn't sleep because they kept hearing sounds which apparently sounded like "children being murdered." I never payed much attention to the sounds because I hear weird noises at night all the time being on a farm, but just then I think I experienced it, and now realise what they were talking about. A high pitched scream......pretty sure it was just a bird though...