Pidgey in Pokemon Go. Ok if you have been playing Pokemon Go for more than 2 hours you most longer no longer like the fact that there are Pidgeys in the game. They are everywhere, this may in fact be proof of time travel and proves where Alfred Hitchcock came up with the idea for the movie Birds, it is after all the only logical conclusion.
Pidgey has an extremely sharp sense of direction and is capable of unerringly returning home to its nest, however far it may be away.