Cockatiels need constant attention, so you need to make sure that you are home enough to spend time with them. When playing without them, make it in 10-15 min increments and get them out many times a day. Also they need a large cage to fly around in with different types of perches. Make sure your house is between 65-80 degrees. Also it is best if you do not have cats.
Cockatiels do not need anything to have a mate. Just put him/her in the cage with your cockatiel, however, if you want them to mate, they will not mate if you do not have a nesting box. In order to breed cockatiels, you will need a nesting box.
To sell cockatiels, you need to breed them first. If you have a permit for breeding, you can. If you have a bunch that you didn't breed, than you might be able to, I'm not sure.
not unless they are VERY VERY sick
White face cockatiels
Yes, cockatiels can get parasites.
warm(but not to warm)and a environment with the necessary nutrition
Hot and humid.
Cockatiels are a type of cockatoo.
Cockatiels are parrots, and members of the cockatoofamily.
Salt water. They live in the oceans.
No, cockatiels should only be housed with other cockatiels. Not only do other types of birds have different types of diets, but they also have different personalities and will sometimes clash with cockatiels.
Answer: Sure, they can. When cockatiels are white, they are either of the Lutino breed, or they are albino.