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Because of its two heads and brightly-colored feathers, Ho-lous is often mistaken for a rare mythical creature. In fact, it struggles to see and its underdeveloped body makes it awkward and clumsy.

Since their two heads do not get along and compete with each other for food, they always eat too much. Its feathers--which glow in seven colors depending on the angle at which they are struck by light--are thought to bring joy.