How can I tell if my budgie is female or male?

My budgie I just got yesterday. The people I got it from didn't know the gender, and I don't know either, we guessed a female because that's what we need. Its nose is white in the middle with light blue around the outside and a very light pink at the sides, its confusing. Can someone help please?
Asked Aug 28, 2013
Edited Aug 28, 2013
HMM maybe you should wait a while... my budgie at first had light blue nose and now she has sorta brown all over her nose so im guessing its a female but I think you should wait a while but could you tell me how old she is, if she has a clear cap than she's probably older than 3-4 months if you're not sure how old she is... than go to this website:

BTW my budgies are fighting over a cucumber now... :p
Answered Aug 29, 2013
Edited Aug 29, 2013

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