My Runners were almost full grown when I got them, and absolutely petrified of people. They'd go out of their minds with terror when I walked up to the coop/run. It took them a long time to realize that I wasn't a threat, the only thing I can figure is they must have been chased a lot and harassed at their first home. They'll never be as tame as my Muscovy or Rouens, who were handled since babies, but they'll come up to me now, and I can walk by them and they don't run away. The thing I find absolutely fascinating about them, is that they move like a little military squad. They stay in a little tight knit bunch and they all move the same direction at the same time. I don't know who the leader of the formation is, but it's funny to watch them when they're first let out for the day, or when I go to lock them up at night. They all get in a little squad and go as a well orchestrated squadron.