Hello. So, I have a cockatiel (Artemis) and a conure (Xatu) that are both male. Xatu is about 8 months old, and Artemis is of an unknown age, but around 1-2 years. They get along really well for the most part - grooming and feeding each other even. However, multiple times throughout the day Artemis will "attack" Xatu and try his best to get on top of him, standing on him. I have to constantly put him in his cage for an hour or two and then let him back out, but I don't know exactly what he's doing and how to stop it. I don't think it's territorial, as they both go in and out of each others' cages and show no aggression (except for food bowls, which they don't normally eat from the same bowl). I'm, thinking maybe it's either bullying or sexual aggression. Either way, I want to stop it, or I'm going to have to get rid of one of them. I've tried letting them out separately, but when I do that, they will not stop screaming until I let the other out. So, separate times is unfortunately not an option. Please help me, I'm at my wits end.