In reply to tetley: Definitely a tawny.
Watched it sat in a tree 2 weeks ago when we disturbed it and again when climbing on adjacent buttress on Thursday and others (Tetley?) disturbed it.
There was a scratched rock note at the base of the route requesting people to avoid the route, presumably left by Tetley.
Had a road injured tawny at home for a while last year, in a vain attempt to nurse it back to health. One look at its claws and the size of its beak would persuade anyone not to come back in a future life as a small rodent!