I'm sorry I can't help, but poor baby. How did it happen? Is there a vet in the area who might have an answer? Hopefully this will bump you into the view of somebody who can help.
roo's fighting in the coop and in there pen and this is what happened. call every vet in town noone works on chicken but I can pay 20.00 to put them down. they run around chirping, dust bathing today, eat, drinking, and sleep. So why kill them. I do have a roo blind in one eye. whats a roo with a broke wing.
if it were me I'd just attempt to wrap it best I could near it's body and see what happens in a couple weeks. It's not a life threatening injury and I'm assuming the chick would do fine adapting if it didn't heal enough to fly since chickens don't do much of that anyway. Just my opinion.
I would get some of the thin width vet wrap (the kind that will stick to itself and not the chick) and fold the wing into a natural position against the body and then wrap on the vet wrap around the body covering the wing. It will be important to have the wing in a natural position because after it heals it may not be able to move.
I am a state and federally permitted wildlife rehabber, and vet wrap will work for wild birds with broken wings!