We have two roos, because we had two separate flocks. Our first roo can be aggressive, but we have worked with him to let him know who is boss. He doesn't come after us now, and he gets treats. The other roo is super sweet, and he reminds me of the hippie days of the sentiment "make love, not...
Honestly, I’ve done it and it does seem to help. However, you have to be careful on how much you actually give to the bird. Injecting the bird works more quickly as it goes through the veins, however, it can also be a bit more dangerous if you hit the wrong part of the bird and it can cause them...