My Bantam OE does that-- but all he does is perch-- he perches on my shoulder and/or head if I'm standing-- and pulls at my pantleg if I ignore him...
And sorry, but the old belief that Roo's all get mean is pretty outdated....
It depends on the individual bird, it's breed, and how they are raised.... some are mean no matter what due to the breed and individual temperment of the bird, others mellow as they get older, and some are big babies their entire life....