Spotted on the way up to Glas Maol, Glenshee yesterday. I have a few options but can't convince myself that it is any one of them as certain things just don't seem to match up. So, any guesses? It didn't help that I didn't have my glasses on, I'd have said around kestrel sized (in fact my first thought was kestrel but I had doubts at the time and these more so when looking at the photos).