Pearl / Opaline Cockatiel

A mutation with white and yellow-ish spots called “pearls”. Only females will keep these pearls into adulthood while males will slowly begin to molt them out at 1-3 years. When combined with opaline, the bird will appear to have more yellow coloration.

Lutino Cockatiel

Crossing two full lutinos together will often result in chicks with bald patches and other health problems, called “double lutinos”. Both males and females of this mutation look the same, though sometimes females will have slight visible barring under their wings. A NSL (recessive) variety also exists in Europe, but is rare.

Sex-linked Yellow-cheek Cockatiel

First established by a German breeder, Bruno Rehm, in the 1990s. Birds with this morph essentially do not form their signature red/orange cheek spot. While they are visually very similar to other cheek-changing mutations, yellow-cheek is not closely related to them. A female is pictured.

Dominant Yellow-cheek Cockatiel

A mutation discovered by an American breeder in 1996 that causes a cockatiel’s yellow and red facial feathers to become buttercup yellow. Although it’s visually similar to the pastel-face mutation, the shade of the cockatiel’s cheeks can be used to differentiate the two. It’s believed this mutation is closely related to orange-face in peach-faced lovebirds.

Gold-cheek Cockatiel

The gold-cheek mutation is a cockatiel morph first established by Barbara Greene in Virginia. They are said to have a dull golden face unlike the shades of other yellow-cheek morphs. Many breeders have reported that gold-cheeks are very poor parents, which may be tied to estrogen production. Whether or not this is directly due to

Emerald / Olive Cockatiel

The typical grey coloration is heavily decreased and a yellow wash can be seen all over the bird – giving it the name “olive” (because it is not true olive like in dark factor). Pure emeralds will always have dark or grey-colored beaks and feet. They were first discovered in the aviaries of N. and

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