Cooper's Hawk sighting and Bobby fortifying the nest - March 11th, 2015

I saw Bobby for a couple of hours today.

He and Sadie have been mating frequently but I missed seeing her today and the last time I visited Washington Square Park.

Bobby flew from flag pole perch to flag pole perch then to a regular hunting spot behind the Bobst Library:

He flew far westward.

A fellow Hawk-watcher and I then got to see a Cooper's Hawk a few minutes later:

We then saw Bobby returning to the park.

We watched him bring a twig to the nest:

He flew out after a minute then flew too far east to follow so I left for the day.