They nest in the mature elms and maples on our street in front of our house. I feed my birds in my back yard where the hawks can't view them from the mature trees. A neighbor nearby set up a feeder in the middle of his yard, but soon noticed that the hawks would swoop in and make a meal out of them as they had a clear view from their nesting site. So he strategically moved his feeder location out of their view. I've landscaped my back yard to give birds various shrubs and trees, including evergreens, for shelter and protection from predators. When I see the Coopers Hawk (or chicken hawk as my neighbor calls them) exploring my back yard, I chase him away.

It looks from here to be a juvenile Cooper's Hawk, as already stated. The tail on Accipiters is long with wide bands, and this bird has that. As for the differences between Accipiters, juvenile Cooper's Hawks have fine brown chest streaks that usually come short of the belly, and this bird has that. So, good call.

Yes, your bird was a juvenile Cooper's Hawk. Looked like a big, nicely marked one. Sorry it took so long for someone to respond; I hadn't checked this forum in some time. Cooper's Hawks are Accipiters and Accipiters are built for ambushing and chasing birds around and about. I have read they do occasionally take smaller squirrels (such as Eastern Gray), but the vast majority of the time they stalk bird feeders to take birds. The squirrel probably felt safe challenging the Cooper's for that reason. Had that been a Red-tailed Hawk hanging around, there may have been a different reaction by the squirrel....

Beautiful photo. Thanks for sharing.