Cockatiels are very flexible and adaptable birds.
The smallest species of cockatoo, the cockatiel (Nymphicus hollandicus) is most familiar to many as a popular cage bird. The cockatiel is the only species in its genus, and in its native range in Australia it is one of the most widespread of all cockatoos.
Appearing much like a smaller version of the cockatoo, cockatiels are called quarrion in Australia. A gentle and docile bird, cockatiels are nomadic, ranging across the Australian grasslands and savannah looking for food and appropriate nest sites. Cockatiels are the smallest member of the cockatoo family (Cacatuidae), sharing many similarities including the characteristic crest, broad head, and males and females that share incubation responsibilities. Cockatiel males also do not display any obvious courtship rituals. When danger is suspected, both cockatiels and cockatoos adopt a crouching posture. From this stance, they slowly sway back and forth, slightly lift the wings and emit a sort of hissing sound. It is believed that no other Australian parrots exhibit a similar fear reaction. Unlike their larger cousins (who can sometimes be somewhat stubborn and reactive to change), cockatiels are very flexible and adaptable birds.
Fifteen different cockatiel colour mutations are currently established in aviculture, including grey, pied, pearled, cinnamon, whitefaced, lutino, albino (a.k.a. whitefaced lutino) and yellowcheeked cockatiels. Mutations in captivity have emerged in various colours, some quite different from those observed in nature. In 1949 the species began to spread throughout the world, with the creation of “wild”, and then “pied” mutation developed in California in the United States. There are many mutations of cockatiels with varied colours, they are: silvestre, harlequin, lutino, cinnamon, opaline (pearl), cara black, silver, fawn, albino (there is a pattern and not just albino genetic mutations), pastel, silver and recessive silver dominant.
65-80% pelleted food, 15-30% vegetables, and 5% fruits. Use many varieties of fruits and vegetables, washed thoroughly.