nycbird, it is so good that you reported this so it could be checked out. Things can happen quickly and it is always better to report things you see! You did the right thing!
first Thank GOD Quest is all right
2nd Thank you nycbird for keeping an eye out and letting folks know of problems
There is always a chance that Skyes old mate is around and will try for the nest box so we need you to keep and eye out.
Don't worry its always better to be safe than sorry. If Quest had been hurt or another falcon you getting them help quickly could have saved a life.