The Tompkins Square Park foster child finally decided to leave it's tree. It first went to a fence and then spent much of the afternoon exploring the main lawn of the park.
The fact that it wasn't eager to fly back up into a tree had a few folks overly concerned. The parents had already fed the new bird twice since it arrived. Fledglings are like toddlers and can do silly things. The right folks were keeping track of the bird, and everyone who needed it had the phone number of both parks employees and the rehabbers.
Releasing a bird back isn't without risk but rescued eyasses deserve to be given a chance to be wild again. I learned a long time ago not to second guess an established, trusted rehabber.