Horrifying Explorations by Author Gordon Grice
What kind of hawk is it? I've recently been reading about how in prehistoric times there was a HUGE squirrel named Paenemarmota, which could grow up to the size of a large beaver. I wonder if there were also giant hawks to match!
It's a red-tailed hawk. Doesn't seem too far-fetched to imagine a hawk preying on those squirrels. I seem to remember reading about massive prehistoric eagles suspected of preying on some of the now-extinct ratites. For that matter, some of the modern eagles are big enough to prey on 60-pound antelope, which would put a beaver-sized rodent within their range. Scientists used to underestimate the size of prey a raptor could take because they assumed it would only attack something it could lift. Turns out some raptors dismember their prey on the ground, then fly off with parts.