The process of taming an adult parrot involves many, many things that can't all be put on this website. One would also need to have many, many more details from you on your particular bird as well as yourself in order to provide this information. I would recommend you research the many, many websites on the web, read bird-related magazines, etc., and/or find someone close to you (such as a breeder or other knowledgeable bird owner) to help you with this. The answer to your question isn't as simple as a short paragraph!
Cockatiels are wild birds so if they were never tamed when they were young, they will still be untame. It is easier to tame a young cockatiel, however with the right attitude, you can tame an adult cockatiel. You have to start with trust. Taming a cockatiel take a while and one wrong move could ruin all your work. Start with standing next to the cage and talking to your bird. Do this for about a week so your cockatiel gets to know your voice and is calmer around you. Then you could try putting a fresh vegetable (in your hand) next to the cockatiel and hold it there. Don't force the cockatiel to get closer to your hand - this will scare him/her. You need to earn trust. Eventually, your cockatiel will be comfortable with you having your hand near him/her. If you cockatiel is comfortable to actually eat from your hand, you can try picking it up. Do not grab our cockatiel on its back, try to persuade him/her to sit on your finger. Do not force your cockatiel to get onto your hand. This will ruin the trust. Eventually your cockatiel will be ready to sit on your finger and eventually your shoulder! It's all about trust and if you're cockatiel trusts you, it would love to sit on your shoulder!
You can pick up a cockatiel whether it is hand tame or not. This does influence how you pick it up, though. If your cockatiel is hand tame, you just put it on your finger, your arm, your shoulder, etc. and it just sits there happily. When it is not hand tame, you have to pick the cockatiel up by its back with your index finger and middle finger around its head. On the internet, look up ways to hold an untame cockatiel and find a diagram so that you pick your cockatiel up correctly if it is untame.
tame them?! if you are have problems with a mean cockatiel, then I suggest you start bonding. You can play with them and teach them songs. but as for taming.... well if it bites, never flinch away or cry out in pain. When I got my first cockatiel it bit me so many times that if i just rubbed against a wall my hand would bleed. But eventually may cockatiel stopped. It will get used to you. As for sitting on your hand, well that is usually automatic, but it will loosen up and start to walk all around your body and play with your hair, and so on. To keep them from flying away is a trick. You have to keep them entertained enough that they won't leave. Eventually they will learn, interacting with humans is not inate for birds.
The cockatiel is a type of Australian parrot.
Cockatiel females are fertilized internally.
There is no such thing as the biggest cockatiel beacause all cockatiel are small but cockatiels are from the cockatoo family, so its relative ( the cockatoo) will be the biggest.
I would recommend you buy a baby cockatiel. That way it would be more likely to bond with you.
Tame is a verb. " I will tame the lion"
Every form of animal and plant life has a genus. The cockatiel's is Nimphicus.
Yes, a gray cockatiel and a lutino cockatiel can have lutino babies. The lutino coloration is a result of a recessive gene, so if the gray cockatiel carries the gene for lutino (which can be the case if it is a split gray), there is a chance that some offspring may inherit the lutino trait. If the gray cockatiel does not carry the lutino gene, all the babies will be gray or gray mutations, but none will be lutino.
1 human year = 4 cockatiel years
The average weight of a cockatiel is 93 grams.