Natural-born charmers, cockatiels are small colorful parrots native to the Australian desert. When raised by people, they're usually calm and cuddly and have an inquisitive, adventurous disposition. Cockatiels are just large enough to be handled easily, but they're not so big that they require a great deal of space in your home. And while the cockatiel's gentle nature and captivating personality encourage you to form close and lasting relationships...