Well with all those feathers looks like you hit low more so than the neck or head.
Means you hit the body. Loosing feathers means little - tho the blood is interesting.
I hit one like that - lost a bunch of feathers - as I ran up on it with a loaded side by side black powder - I tripped on the big branch the bird was hiding under only to stumlbe and release the bird from the branch tangle. The Tom ran a few steps and flew into a cedar swamp to which I spent thenext few days looking for it. It had the Ole 20 oucne Coke Bottle beard!
Never found it.
But like I said I have used my dog to help find 2 cripples.
JW