I saw this bird (last photo) up in a bare tree in Jones Beach NY on Dec. 2. I thought it was a juvenile Cooper's Hawk. Looking at the photo, though, I think it might be a Sharpie. I know that Sharpies have smaller heads, skinny legs, and squarer tails, but exactly how much? Over the last few years, I have seen several juveniles and thought that they were all Cooper's, but now I am not sure. The bird in flight is the same one perched on a roof. I'm not sure about the sizes. Are any of these Sharpies? The flying bird certainly looks like it has a square tail.