Steve...looks very nice. Good job!
A couple of suggestions to think about: The run fence is topped off with 2x4's. This can act as a perch for hawks. Hawks don't relish diving into an enclosed space, as they don't have much "taking off" room when they exit. They don't mind a perch to check things out from though! They can...effectively, come and go easy with the aid of a perch. If you'd like an easy remedy, you could do this: put eye-screws every few feet into the top wood rails, then pass some inexpensive baling wire through them. A hawk won't want to land on a thin wire! Nor will the chickens. Also...many would recommend a higher fence.
Do you have a small chicken door for the birds to go into the hen house through? If not, consider putting one in, that way, when frightened or in need of hiding, they'll have a secure place to go. Also...they can go in when the weather turns bad. If you're gone from home and it begins to rain, they'd be stuck out in the rain for hours. A small door, or a small exterior shelter will solve that.
