I have a male and female - they are about one year and I have had them for about 2 months. They bicker and nip at each other occasionally, but I've considered this normal behavior. I noticed this morning, though, that they have what appears to be dried blood around both their necks. This is the spot they nip at so I can only assume they're fighting? Why? I am so concerned...could they be sick?
I would separate them immediately. It's one thing to bicker, but to actually draw blood from each other means they can't live together. That's dangerous. Losing just a small amount of blood can be dangerous for birds.