I would have thought so too! Our best guess is that he (or she?) was just really hungry and I wasn't presenting enough of a threat. I did stay about 10-12 feet away as I circled around. I'd imagine it's a lot of work for a bird of prey to get a meal, so he's going to guard it as much as possible. Given that raptors can be pretty vicious with their claws, I wasn't going to bother the hawk too much anyway!
This is definitely a juvenile Red Tailed Hawk. My best guess is this hawk is trying to hunt on its own without the parents helping it. It is also possible this is a migrant hawk that’s already left the nesting area. After traveling hundreds of miles, this hawk is so hungry that it doesn’t care what else happens as long as it gets the meal. I will say, a hawk without much hunting experience has a less likely chance of survival and only 10% of juvenile Red Tailed Hawks make it through the first Winter. This hawk also ate very late in the day. Other hawks would roost way earlier than this hawk did. I can see how dark it was while the hawk was still eating in your other video.
I did try to give it space. I don't think a fence would have helped in this case, as surely the hawk came in from above. This *is* why we only let them out of the run when we're outside with them, but Sharon managed to sneak out.