How do you tell the difference between male and female parakeets?
In general, male keets have blue ceres and females have white/brown/beige/tan. The cere is the colored area above the beak. However, the cere has to be fully colored out (adult coloration) or the cere color may change with the first and/or second molts, depending on the overall coloration of the bird. Additional information about various color mutations/cere color can be found on the internet.