All About the NCS n Administration n State Coordinators n Get the NCS Journal n Join NCS Owner & Enthusiast n Read About Cockatiels n Cockatiel Community n Pet Videos Breeder Area n Leg Bands n Registered Aviaries n Mutations Gallery n Genetics Exhibitor Area   n Standard of Perfection n Showing Cockatiels n Show Calendar n Show Reports Club Affiliation n Affiliate with NCS n Affiliated Clubs n Judges Panel NCS Online Store n Cafe Press   Photo Gallery     This cockatiel is a triple mutation. "Heavy Pied" is a recessive mutation as well as the whiteface mutation which removes all yellows and reds from the plumage,   Whiteface is a recessive mutation.  The Pearl mutation is a sex-linked mutation.   Gallery 1  / Gallery 2 / Gallery 3   Copyright Notice & Disclaimer Statement   Photos by Jay Goss.com                                                          ©2008 NCS - membership@cockatiels.org                                             e-mail editor corrections - thanks!