Male or Female?

[ohfragyourself]

Hi, I just got an 11 week old baby 3 days ago. I'm wondering if there's any way I could possibly tell the gender from the behavior? This little birdie wasn't tame or hand fed when i got it, and is now letting me scratch it without sticking out its beak at me, and I managed to rub its beak for a bit a few minutes ago. It also eats from my hands both palms and fingers. Doesn't bite but tries to a little. kind of nibbles. o: Very very calm and QUIET! It hasn't made any sounds yet. I think I heard 2 little sounds in a row yesterday but that was it. Also, I've heard it scream a little from being scared when I first got it but that's about it. So I'm wondering when it will start making different sounds... If it starts squealing I guess I'll have my answer which would make it a female but I really don't know because 11 weeks doesn't make it mature, so that may not even help me find out. It tends to puff out its chest a lot and stand up tall and stretch out its neck, I don't know what that means. I've looked on bird body language charts but that doesn't quite answer my question. So, Is there any way to know? I know my best guess is dna testing but I really don't want to traumatize this little guy ): I will get one eventually, but for now, any ideas?
-I couldn't put a picture because I'm new.. :/

[sanjays mummi]

Sorry, but without dna testing you will have to wait and see. Sanjay was 8wks when I got him, and he was very quiet for a while. I could hardly wait to hear his call.

[ohfragyourself]

Blakey talked for the first time today! 5th day I have him.. I think. LOL it took its first bath on its own and talked a few minutes today (: sounds derpy.
Woke me up with its call this morning. I guess it heard my dog playing with a squeaky toy and had to scream, but didn't know it could. Ever since this morning it's been trying to talk more and more ahah it's as if it didn't know it could talk. So cute!