Main Page | See live article | Alphabetical index A cere is a fleshy, often waxy area above a bird's beak. 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. Immature budgies have pale pinkish ceres which are smooth and shiny. The nares are set within the cere. External links: Photo of a male budgie's cere This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.