MrFox did you look in on this thread thinking there might be an easy meal?
Impossible to say what the bird is really. Seeing it flying would make a lot of difference and obviously there was something about it that caught your attention – edit, no I see it was caught by accident.
I’ve recently been going through old video tapes and checked some footage shot on the Isle of kerrera few years back. There was what we suspected to be an eagle but it was difficult to see it against the light. It was also hard to see the screen while filming. The footage showed very clearly that it was a sea eagle. Easy to see but zoomed in camera hosepiping meant poor footage.
Nice to have the question cleared up though.