I don't have a ringneck, but I have an Alexandrine, their cousin. Of our 3 birdies, he's the most solitary - doesn't really play with the girls at all. I think he would prefer to be an only fid, but he isn't agressive or anything to our other birds. However, he is the smallest of the 3 and we don't have another Alex or ringneck, so there isn't the possibility of ganging up. Not sure how helpful this is.