Cere

A cere is a fleshy, often waxy area above a bird's beak.

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Budgerigars are dimorphic because the males' ceres turn bright blue upon maturity, while the females' ceres turn tan. The female budgies' ceres also appear wrinkled, to a greater extent during periods of fertility.

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Immature budgies have pale pinkish ceres which are smooth and shiny.

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The nares are set within the cere.

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• Photo of a male budgie's cere

Budgerigars: REDIRECT budgerigar...

Dimorphic: REDIRECT dimorphism...