I spotted who looked very much like Rosie (rather than Bobby even though the lighting made identification difficult) as she flew quickly over the eastern side of the park, heading north:
She flew right to and landed on the southwest corner top of One Fifth Avenue:
I and an out of town guest (who has always loved the Hawks but never got to visit them until today) watched Rosie relax at her perch for about half an hour before we had to move on.