Hundreds of hours into this game and this is the first time I've ever seen a dragon fly over Riften while inside the walls. I know of the dragon-shouting-run-inside-walls to get the dragon in the city, but this wasn't the case. There was no dragon outside the walls before I entered it.
First, my dragons turn stealth, and now this.
This is turning out to be one of the best Skyrim games I've ever had!
So, was this a fluke or have you seen dragons flying over cities as well while inside the walls?