James and I went up to the old nest at Inwood Hill and it looked like it hadn't been touched since last year. We'd find out later in the afternoon, why!
Failing to find any Red-tailed Hawks, we went to the outlook that has a view up and down the Hudson River. There we found a Red-tailed Hawk hovering and behaving like an Osprey.
The wind was bitterly cold, so we started to walk down to exit the park. The path we had come up was icy, so we took the alternate path back down. Halfway down, we discovered the female hawk about 50 feet from a new nest.