If you get a female that isn't a pearl (as girls either are or they aren't, whereas boys can carry that pattern without showing it) all of the female offspring will display the pearl pattern (which they will inherit from Storm) and the male offspring will not (they will be carrying it but not displaying it because of the non pearl gene from their mother) so you'll be able to sex them once they feather in, which is very helpful as often people are looking for a particular sex when looking for a pet bird. Sometimes the males can be carrying other sex linked traits and unless you know their parentage you can get a surprise in the nest.
It is very fun breeding them but we always seem to end up keeping a bird or two. Some babies are very hard to part with, but they are such great pets that it's nice to find them good homes as well.