Sex Maniac Rainbow Lorri

by Mark
(Australia)

Hi, My little Lorrikeet seems to have turned sex mad. Whenever I have him on my hand he just wants to hump it, and when he is on my shoulder he quickly jumps into my hair and starts going to town.
I immediately stop him and return him to his cage, but I cannot get him to do his ladder workouts or other tricks, because all he seems to want is sex. He is 1.5 years old, so I'm sure it is a puberty thing, but is there anything I can do to stop him going to town on me?
I don't want to get a partner for him, and hope this may just be a passing thing.
Thanks in advance
Mark