A Cockatiel is a type of bird that belongs to the parrot group. Its most basic color is gray with both the male and female having gray bodies, beaks and feet. Mature males will have solid yellow heads and black feathers on the underside of their tails while mature females will have more of a grayish head and barred yellow with black feathers on the underside of their tails. However, there are many different color mutations in Cockatiels.
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