Well,
I'll let a flock out one at a time but I can't take my eyes off them. To answer your question, on good days no they don't have too wait. We have too many foxes so I need a run and can't stop watching them.
(I found out the hard way with Guinea fowl.)
We have hawks too, not problem and I don't want a YET.
It isn't gonna be too easy of a task (The run building),
So I have to choose good weather. It is crazy weather were I live!
I have been letting them outside every couple of weeks.
-The Angry Hen