[Awen Moonshine]

Looking at a lot of the information that's already been gathered the Ditto are hidden in commons like Pidgey, Rattata, Zubat and Magicarp, so I don't think there is anything to fear from catching a rare. ^_^

I was lucky, I'd literally just seen a video of someone catching one in one of the pokemon go groups I'm a part of on facebook when I logged into mine and caught one too ^_^;;

You'll find one, seems like a lot of people are having trouble catching/finding them too.