Need Help Sexing my Lutino Budgie

[lemontree]

I have posted this in another forum with not many responses, hopefully I'll get more here! I just picked up this little guy/girl today and I know the lutinos can be hard to sex. Can anyone help me out? Thanks in advance!

 

[lemontree]

around 4 months old if that helps!

 

[Cyan Night]

I don't think you'll be able to tell til he/she is about a year old.