this would be a good investigation, have u used evp n camcorder yet? so one can only assume at a hazard guess that it was boy from years ago which was attched to the farm, very interesting. it is weird cus same happened with me you only get a glimpse for a few seconds n cus its so fleetingly a couple of mins later u think its ur mind playing tricks on you, but obviously in your case you obviously have some good activity going on...........see told u little boys r just so noisy!
are we doing this before christmas?