This beauty is a young bird. His black bands go all the way down to his cere (nose). He will lose these bands when he gets his adult plumage. His first molt may start as early as 4 months. At around 8-9 months if age his eyes will change and he will get a white ring in his iris. Although his cere is now blue if it changes to brown in several months then this bird is a female. Nice photo! He/she appears very friendly.
Can't tell, the males have a dome shaped head while the females have a more flat shape to their heads. My mom and I use to breed them about 3 years ago.
From the looks from the picture, I want to say male, but I would need a side profile.