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 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 3   "Heavy" Pied cockatiels have 70% or more light areas and about 30% dark pattern area. They have dark eyes, which can distinguish the heaviest pieds (birds with no grey feathers, or "clear pieds") from lutinos. This mutation is recessive.       Gallery 1  / Gallery 2/ Gallery 3   Copyright Notice & Disclaimer Statement