Aloe is a wonderful healing agent and is safe, if the bird keeps either picking at the wound or stretching that wing breaking the scab open then the sock restraint should prevent both . The Rescue remedy is another good tool that will assist the need to keep attention away from the wound. Definitely keep the bird occupied more to do and add some protein to the diet, cooked chicken, tuna, salmon or scrambled egg. Even chamomile tea in his water bowl may help calm the stress.