Cockatiels are not endangered, partly due to the fact that they can have multiple clutches of eggs per season, and they generally lay 3-6 eggs at a time.
Cockatoos - specifically black cockatoos - are endangered in the wild. Several rehab and captive breeding programs exist both in Australia and in other nations, but bird care can be expensive so these groups need your support.
The cockatiel is not endangered. Its official conservation status is secure in every state of Australia except for Tasmania, where it is not found in the wild.
The cockatiel is a type of Australian parrot.
As a general species, parrots are not endangered. Many individual species are plentiful, with abundant populations of millions of birds. Some of these include parrots such as the budgerigar, sulphur-crested cockatoo, cockatiel, galah and rainbow lorikeet, just to name a few. However, some parrot species are endangered. The kakapo of New Zealand, for example, is critically endangered. Other endangered parrot species can be found at the related link below.
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.
Every form of animal and plant life has a genus. The cockatiel's is Nimphicus.
The average weight of a cockatiel is 93 grams.
1 human year = 4 cockatiel years
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!
My cockatiel bites itself on the back whenever it has an itch. This may be the cause.
You cannot. A female cockatiel needs a male cockatiel to mate with her before she will produce fertile eggs. And incidentally, birds do not "fall pregnant".