"The cockatiel, Nymphicus hollandicus, is undoubtedly one of the most popular species among aviculturists. Next to the budgerigar, it is the most popular psittacine as a pet. It can be reproduced quite easily in just about any type of aviary. It is easy to sex (except for the pied) and when tame makes a very enchanting pet. One of the main reasons for its popularity among aviculturists is that several mutations have occurred in this species. There is a great fascination in acquiring two or more mutation colors on one bird."