I started breeding and hand-raising parrots at the age of 16, but I was born into a family with a grandmother and mother who had both been breeding and hand-raising/feeding for decades, and who both mentored me for YEARS before I ever got my own first breeding-pair of birds and allowed them to breed.And that's exactly the way you need to do it too, because just reading your first post made me sick to my stomach, and I'm just being honest with you...Allowing a pair of birds to have 2 clutches of fertile-eggs in 3 months can literally kill them any number of ways and for any number of reasons....
I'm not trying to be mean or rude here with you, but it's quite obvious just from reading your original post and then one of your replies that you have absolutely no parrot/bird breeding education, experience, or understanding of bird medicine/health and what breeding them more than twice a year and trying to influence them to breed outside of their natural Breeding-Seasons will do to them. They have "normal Breeding-Seasons" because those are the times of the year that they naturally breed. Twice a year. Dong what you've already started doing and what you're talking about doing will only result in malnourished, undernourished, underweight female breeders who will either die slow, horrible, painful deaths from Malnutrition, or sudden, horrible, agonizingly painful deaths from Egg-Binding...As it is you have a female Cockatiel who has laid 9 fertile-eggs in 3 months and now has to feed 9 babies at the same time because they are going to overlap and the first clutch will not be fully-weaned before the second clutch hatches and also needs to be fed. And if you purposely attempt to influence a breeding-pair of birds to breed out of season or "breed when you want them to breed" as you said, you're going to be running through female birds like water, and have a bunch of dead babies.
You have to start somewhere if you want to learn to breed birds, and there is nothing wrong with that. But there are enough unscrupulous, irresponsible, "mass-volume" bird breeders in the world who don't have a clue what they're doing and don't care either. So if you want to breed birds, please do it the right way, the ethical way, the safe way, the healthy way, and put the bird's welfare first before your own wants, like making them breed "when you want them to breed"...Find a local, experienced bird breeder, either a private one or at a pet shop or bird shop who breeds their own birds, and ask them to mentor you. Learn all about how to properly and safely hand-raise and hand-feed baby birds, because trust me, just because you want and expect the parents to feed and raise the babies for you doesn't mean that they will. What are your plans for when eggs hatch, you have week-old baby birds in a nest-box who are completely bald and need fed every 2-hours including overnight, and the mother or father kicks them out of the nestbox or starts hurting them or trying to kill them? Or they refuse to feed any of their entire clutch suddenly? Do you own a Brooder to keep the babies at the 95 degrees F that they must be kept at before their down-feathers grow-in, or at the 85 degrees F they need to be kept in after their down grows in but before their outer feathers grow-in? Do you have all of the hand-feeding equipment ready and waiting to be used at any moment, like a digital candy/cooking thermometer with a metal probe to keep the hand-feeding formula always between 104 degrees F and 110 degrees F? Do you have all of the various medications and supplements you need for when a baby develops Crop-Stasis due to a Fungal Infection?
I could go on and on, but I'm already quite certain that you don't have a clue what to do nor any of the equipment necessary if any of these eggs hatch and any chicks are rejected by the parents, based on the fact that you were excited and thought it was a good thing that your female had already laid 2 separate clutches in 3 months...Or if you even know how to handle Egg-Binding if it happens to your poor female who has produced and laid 9 eggs in 3 months...So please, stop. Find a mentor, get the proper education, buy the proper equipment and supplies, learn how to use it, and then go back and do it the right way. And DO NOT allow that female Cockatiel to be bred anymore this year, and make sure she has constant access to both a Cuttlebone and an Avian Mineral Block, and she's getting ample fresh dark, leafy Greens every day, because she's most-likely Calcium and Phosphorous deficient, and the #1 cause of Egg-Binding is a Calcium deficiency which causes the egg-shells to be too soft for the female to be able to lay them...So if you see her struggling to lay an egg, straining like she has to poop for longer than an hour or so, you need to get her to the closest Avian Vet or 24/7 Emergency Animal Hospital...
And please come back here immediately and post a new thread if you have any problems with either the mother of the babies!!! If you have even a hint that something isn't quite right, please do not wait and see or let time slip away, just come back here and post immediately so we can help you or direct you in the correct way to go. We don't mean to be harsh to you, we want to help you so you don't just become another bird-breeder who doesn't know what they're doing and does it in an unsafe and unethical way that is totally unfair and unsafe for the birds.
