I spotted Bobby on a terrace railing along Broadway:
He was looking in the general direction of Washington Square Park.
Here is a look at where this building is in relation to the park (it's the building on the right with the big pool on the roof):
He disappeared during the few seconds I happened to look away.
A Cooper's Hawk flew overhead:
I saw who was likely Bobby on the ConEd building about an hour later:
Four Turkey Vultures circled by One Fifth Avenue for several minutes:
Unfortunately I didn't get to see any nest switches today but I did spy this lovely white pigeon: