How do I tell what sex my green scaly lorikeet is ?

by Anastasia
(Newcastle)

I have a 7 month old lorikeet and I don't know if he is a male or female and if this helps this is wat he can do so far

whistle

make this grouchy small man voice (not saying anything proper though)

he knows his name and hello but doesn't know how to say it he just squarks






Thanks,
much appreciated Anastasia