Crows are territorial, punctual, family orientated too. Crows harass Red Tailed Hawks..that territorial thing to a point.. most of the time
the hawk will either wait them out while sitting in a tree...or if out in the open,try to catch a thermal and ride it up till the crows give up...crows will only go so far up..occasionally, if you are lucky enough to see it,the hawk will get pissed while their diving all around the hawk...the hawk will do a flip over on it’s back and flash those talons....older crows usually get the hint. Younger ones learn one way or another.
And mockingbirds harass crows. It is always so funny seeing a feisty little mockingbird flying across the sky, scolding and chasing a crow.