Whatever it is, I'm pretty sure it's a juvenile. It does not have the reddish eyes of an adult. In late summer I found it sitting inside my run watching the entrance to the coop (where my flock was huddled). I let it thrash around a while & quickly closed the coop entry. When it didn't find the door, I had the idea of trapping it inside the run. As I was closing the door, I felt it's wings brush against the door. Not sure what I would have done if I had trapped it..... That hawk was either the same one- but slightly smaller - or a sharp-shinned hawk. If this is the same hawk, it grew, but the markings look the same.