[aluz]

Aww, your budgies are so cute!! Your Kiwi is without a doubt a little budgie boy, he still has quite a bit of melanin on his beak, I'd say he is about 1 and half months old, definitely below two months old.
It could be the lighting, but looking at your Luna's cere, it seems to me she's a boy too.

 

[aluz]

Yeah i know Luna is a boy ^^ I couldn't have though of another name so i named him Luna xD

Oh, my bad then... Every time you talked about your Luna, I always envisioned a budgie girl!
I can sympathize with you, though. I have a male lovebird named Khaleesi, but to my defence I only learned he was a boy after 6 months of having him.