I spent the early afternoon looking at the Riverside Red-tailed Hawk pair on Saturday. There nest is just off the Hudson River near 8st Street and looks great. Last year they laid eggs around mid-March, so the female should start sitting on the nest soon.
Other nests in Manhattan are doing well. Inwood Hill Park, Highbridge Park, St. John the Divine and 5th Avenue nests are doing fine. The Highbridge nest is back to its old spot.
The Central Park South pair is still there but I don't have any details about their nest. The Houston female lost her mate last year, and may be nesting on the ConEd plant around 14th Street. The pair that was around the City College campus remains a mystery.
Sightings of hawks this winter around the north end of Riverside Park and around the Court House buildings on Center Street make these locations possibilities for new nests this year.