One time when I was walking about, I looked up and saw what looked like a manta ray, it was about as high, if not higher than most planes fly in this
area, I even had a look at it with binoculars (Which are among the things I carry in my backpack on a daily basis), it was very strange.
That was some of the craziest stuff ive ever seen.
Its interesting to say the least, my guess is fake, but then again... flying manta rays? it sounds strange but to a degree i could believe in the
possibility, but at 20,000+ ft? 300+mph? doubtful.