Nick, I saw the same type of thing with turkeys a couple of years ago. Some young turkeys came out into a wheat patch but were acting nervous. Some refused to come out. Then we heard an eagle scream(?) and saw it coming. The turkeys just squatted down in fear and didn't try to make it the 6 feet back into the trees. We saw the eagle coming. It flew over and didn't mess with the turkeys. Maybe it saw us. No idea. Wish I'd had a video camera.