Seems that my bird of prey issues won't end.
I've been seeing this peregrine falcon daily for a while and today he finally took a shot at my lone young bird. He was flying tight circles in the yard as per usual when the falcon, which was several hundred feet up, suddenly stooped and came barreling down out of the sky. Fortunately in a stroke of luck Mr. Frodo was already coming in for a landing on the loft and I think once the falcon saw me and the tight quarters it had to work with it decided against it, circled around a bit, then left.
My birds haven't had much intetest in flying anywhere besides the perimeter of my yard for ages now and I think surely if one of mine had been in the open sky the peregrine would have won.