Here is some information that may be of help: http://www.boaf.com/article_2.htm

In parakeets it is difficult to tell the sex of young birds but in an older bird it's fairly easy. If the nose and feet are blueish then it's a boy; if it's pinkish then it's a girl. A girl will also bite and hold on but a boy will generally bite and let go. I hope this was helpful.

look above the budgies beak where the nostrils are if its a blue or pale blue color its a boy if its a beige color its a girl.

Here is my budgie. I thought it was a he cuase his nose used to be blue bt now it isnt. he is three yrs old!

Parakeets over 6 months of age are sexed by their ceres, the area above the beak where the nostrils are. Generally, males will have a deep bluish cere. However, in albinos or lutinos, the cere might be pink. The cere of the male is slightly more protruded than the female. It is always smooth and consistent in color, whereas, the cere of a female parakeet generally has a scaley appearance. Females can have white, tan or brown ceres. By nature, females are more aggressive and bite. Males are more calm and laid back. I have photos on my website: Parakeet Paradise, which can be found at www.freewebs.com/huggybec. I hope you will find this site to be helpful!!

My birds cere is pink wit a shade of light blue. STORE person said it has both sexes....but shes a lil bitch n bites so i consider her a girl ;)

Although brown, or white if it is female, is true. I have seen females with whitish blue ceres. The males are typically a dark blue on the cere, not light blue on the cere. But that is my experience with budgies of mine. If a dark blue cere changes to brown making the male budgie look female take your budgie to the avian vet. It could have a health problem. I know from experience. I never read, or heard anything about a budgie having both sexes in reference to BeyonceFanatic. I have read, or seen on a show that they can take on the role of another gender if the opposite gender is not present: they can be homosexual, or lesbian. At the moment I am not sure the source of the taking on a role information. But it might have been one of Annette Wolter's books on budgies/parakeets. The role changing behavior makes me wonder if this can chemically change their appearance. This issue can be researched further. I see no picture of a budgie on the page. So I can't tell from that. I hope this helps. Birds are complex, and mysterious. Regardless if you know the gender, or not remember to take good care of your budgie.