Is my baby budgie male or female?

[Alfie]

I just bought a blue baby Budgie from Petco today. She/He seems very shy and hasn't moved since being bought. In the pet store, she/he seemed to be sleepy but had a good temperament (wasn't biting like the aggressive purple budgie who came up, bit him/her, and then started "kissing" (?) her). The cere is very pale pink and more grayish white in the center. I'll try to attach pictures tomorrow.

[Wolf]

This bird should not have been sleepy during the day unless it were sick. Need to see pictures asap as well as more information.

[Pajarita]

Yep, sleepy budgies are usually sick -healthy ones are quite active.

[Alfie]

I'm worried about that (see my other post). He/she has only moved about two inches over last night and all day today, but I just caught him eating some seeds by stretching up to the feeder from the cage floor. Also, I can't figure out how to post pictures, can someone help me?