Eclectus birds are very unique, and highly desired. If you've had such a bird for sometime, you might consider breeding. But before you jump right into the breeding game, there are numerous things that you must know.
First and foremost, breeding is very serious business. It is important that you are breeding these Eclectus parrots because you are passionate about them. Breeding just for the money, or unplanned breeding, is never a good thing. Most breeders have been Eclectus owners for numerous years, and typically have several birds.
Ideally, over time, a female and male will actually show an interest in each other. When this happens, you have a pair. Note that if there is no real interest in each other, they won't mate. They will simply ignore each other, or at best tolerate each others existence. Once you are sure that you want to breed your pair, you must provide them with a nesting box. These boxes are available in pet stores, or from online sources. These boxes should hang inside the aviary or cage.
For the best results, the pair should be given privacy. Noise and movement around them may distract them from the business of mating. Give them as much privacy as possible, including privacy from other birds in the aviary. Otherwise, you will likely have unfertilized eggs.
When the hen lays the eggs in the nest, she will essentially kick the male out of the nesting box, and not allow him back in until the eggs have hatched. She will spend the next 28 days sitting on her eggs, but she may not actually start sitting until the day after the eggs have been laid.
Note that nothing is needed from you during this time, other than the proper environment for mating and egg sitting. It is important that the room stay as calm and quiet as possible. You don't want your hen to be startled and trample the eggs. The real work doesn't begin for you until after the chicks have hatched. Even then, their mother will tend to them for the first ten days to three weeks.
The longer you leave the chicks with their mother 'up to three weeks' the healthier and happier they will be. However, it is important that you know your pair well. First, the male won't be able to feed the female fast enough for her to feed her babies. It's a fulltime job. The male will supply the female with as much food as he can, but he will not feed the babies. The female may not know how to feed her babies if she was never fed by her own mother. Make sure the chicks are getting food, and if not, start hand feeding them right away.
By the time they are three weeks old, however, you must remove them from the nest, and separate them from their mother. At this point, they will be hand fed. This gives them the human socialization that they require, and makes them highly desirable creatures. It is important that you handle them as much as possible each day, without hurting them.