Here are a few links that might help.
If you splint, it's important that you watch for swelling. Wrap tight enough to do the job, but not too tight. It can take several weeks for healing enough that the bone has start to knit, and a month or more for complete healing. Lower leg breaks have the best chance of healing. Upper leg, near the hip, are much more problematic and can require pinning (avian vet surgery) to enable healing. Best of luck.