After a few days of no red-tailed hawk sightings, I spotted Bobby flying in lazy circles above the East side of Washington Square Park this evening.
One of two peregrines who joined in the circling (Bobby is on the right):
He flew off the building and toward his evening roost just before I could focus in on him. Goodnight, Bobby.
It's definitely looking like autumn in the park now:
Chrysler Building looking eerie in the haze: