I recently caught Dora the hawk on a break from her nest. She was perched atop a 20-story building, stretching out and keeping an eye on her territory.
Suddenly, a crow appeared.
It took aim at her and made several swoops just over her head.
They exchanged angry words.
Despite the harassment that went on for a couple of minutes, Dora didn't fight back. Eventually, the crow went away, Dora went on with her preening, and then flew off on her own terms.
Later that day, I just caught a glimpse of her back at the nest, ever vigilant.