If you look closely at the Sophora below, you'll notice a red tailed hawk (Buteo jamaicensis) perched on one of the limbs. To add to the suspense, you may also notice the tree shades a dog run.
Don't worry, all the lapdogs survived - at least while I was there. But if you forgive a slight anthropomorphization, I like to think the hawk took a macabre thrill in scaring them a bit.
This hawk is most likely progeny of Pale Male, the famous hawk who resides on a 5th Avenue coop's ledge, to both the pride and horror of the building's many tenants, including Woody Allen, Mary Tyler Moore and Paula Zahn.