I'm from berks county. About 10 years ago when I was in the hunters safety course, the wildlife officer that was present had said that there was one in the Pottstown area. Whether they had legitimate confirmation or not I do not know.
I live in Montgomery County and have seen two thru the last five years. One while driving near Harleysville PA. I was even able to pull over and take of pic of it inn the field. The other I saw when rabbit hunting and I watched it for over a minute. Tracked it to a hole he went in.
Of course no one believes me on either encounter... but I know