Does It Matter What Sex My Bird Is as Long as He or She Knows Its Name?
Why is DNA so VERY important even for your non-breeding parrot?
About 20% of parrots, like budgies, eclectus, and cockatiels that are sexually dimorphic.
That means that the gender of the bird can be identified by physical differences.
In the case of budgies and cockatiels, they have to reach near-adulthood to exhibit differences while Eclectus are readily identifiable upon feathering out the first time since females are red and blue while males are green.