A recently-developed mutation in red-tailed black cockatoos. These cinnamons have a golden brown coloration, a lighter beak, and what appears to be slightly reddish crest feathers. However, these interesting crest colors may molt out with age. Depending on the bird’s sex, it may either keep or lose its yellowish facial spots.
A mutation similar to dilute, having light golden-brown plumage and a bright red tail. However, opalines also have yellow, light brown, and even somewhat orange markings on the crest and wings, as well as a fully dark bill. The bird pictured is male, but has not yet lost its opaline markings like a cockatiel would.
A brown-colored bird that varies in appearance based on its sex. Males have dry coffee-brown plumage with a red tail and slightly lighter bill and feet. Females, on the other hand, are taupe-brown with light yellow spots, a red tail, and slightly muddy-colored bill (pictured second). Dilute red-tailed black cockatoos are somewhat rare but are
A rare mutation that varies greatly depending on the individual. They often have light-colored bills with patches of yellow and orange on the head, wings, and/or chest. A lightly-pied female is pictured first while a somewhat heavier-pied male is pictured second. It can occasionally be found in wild populations.
