Contrary to popular belief, female cockatiels can learn to speak, it's just not as common as males.
They can, but it is the males that are more likely to learn to whistle.
Lutino cockatiels are a colour not a gender. However, it does happen that because of the genetics and chromosones they are most often female although there are some males lutinos around (or there wouldn't be any left.)
Yes, that's how you get more cockatiels.
The gestation period is 19-21 days from the time the tiels start sitting on the eggs.
No. Macaws are bigger. Cockatiels are only 12 inches long, and their bodyshape on slender. Smallest macaw, Red-Shouldered Macaw, is about the same lenght, but is much more sturdy, and has lot bigger beak.
Yes, cockatiels love almonds. They have calcium and protein. If you have a female cockatiel feed her these when she is laying eggs.
Yes, cockatiels can get parasites.
Cockatiels are a type of cockatoo.
Cockatiels should not have a lump on their throat.
Cockatiels are parrots, and members of the cockatoofamily.
The sexual organs are located near the rear of the bird. Both male and female birds have a sexual organ that is called the cloaca.