I saw a couple pictures of bows with feather backings the other night.
For the most part all I could find as far as a "how to" were ways that ended up NOT working..or cracking in cold weather.
I've seen bows (pictures only) with hundreds of small feathers laid on the back to resemble a bird look.
I've also seen some with a single pheasant feather running up the back...kinda like snake skin.
I would think you would want a real thin clear glue.
Put some down on the bare wood back.
Then maybe you could brush the glue over the feather to incapsulated it...?
Then seal the bow with what ever sticks to the glue.
....maybe the bow should be completely finished...then just glue down a feather to the back and spray a few coats of poly on it.
I'm not wanting to go the route of laying 100's of little feathers down.
..but a couple of long tail feathers (quill shaved down of course) would be cool.
This is of course a cosmetic thing...not to strengthen the bow or whatever.
..anyway...any of ya ever tried such a thing?