Heres a photo of Spit a week after we got him (i cant believe how scruffy he looks! haha):

it was a few months after we got him that he molted his tail feathers to grow the two long blue ones aswell.
this is him about 8 months later.

looking at the photos, would anybody be able to tell me wether the pet shop owner was right? according to the pet shop owner Spit should now be two years old. i dont know anything about aging birds but i seriously doubt the guy in the shop knew what he was talking about.
-i hope i posted this in the right place, i didnt know where else to put it.
thanks everyone