Jul 13, · The adult male budgie has a bright blue color cere at the top of the beak. The male budgies cere is normally bright and predominant. The female budgie has light color cere compared to the male budgie. The female budgie cere also found in . An adult budgie who has pure white or dark blue or purple cere is surely a male, and an adult budgie who has a brown or giner yellow cere is surely a female.
An adult budgie that is about a year or older will have a clear cap with no baby barring, and fully developed iris rings as you can see in the picture top the Left.