This is a red-tailed hawk (Buteo jamaicensis) who flew high over my yard several months ago. The hawk seems to be screeching while it flies.
"The Red-tailed Hawk has a thrilling, raspy scream that sounds exactly like a raptor should sound. At least, that’s what Hollywood directors seem to think. Whenever a hawk or eagle appears onscreen, no matter what species, the shrill cry on the soundtrack is almost always a Red-tailed Hawk." - allaboutbirds.org