There looks to be some question as to whether the Plaza Hotel pair might be Pale Male and Octavia building a secondary nest.
Looking at the photographs I've taken over the last two days, these look like a new pair to my eyes. Both the male and female look different than Pale Male and Octavia.
(Certainly, this pair has ventured up to Pale Male's territory over the last few weeks and it might be one of the Central Park South hawks that was mistaken for Octavia up north. This would explain matching field marks.)
The Plaza Hotel pair also have a nest on the Crown Building. It is in a better location from the Plaza, but sadly out of view from the street. I hope they nest on the Plaza, but if they don't we won't be able to see the eyasses for some time.