One of the famous red-tailed hawks of Central Park. (Not as famous as Mandy the Duck maybe, but much loved by New Yorkers, except when they decide to build their nests on snooty Fifth Avenue apartment buildings.)
While I was admiring and photographing the beautiful hawk, this poor squirrel -- who'd also clearly noticed the hawk -- was literally frozen on this tree next to me.
It didn't move so much as a whisker, but kept making the most heart-rending squeaking noises. After a few minutes the hawk flew away, and once it was safely out of sight, the squirrel scampered safely away.