cere (redirected from Ceres)

cere

the firm, fleshy bond lying across the base of the beak of birds. Most obvious in the pigeon as a white, saddle-like object. The cere is blue in male budgerigars and light brown to pink in females, so offering a convenient means of sexing these birds. The color may fade in males with testicular tumors.

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cere hypertrophy

occurs in psittacine birds, particularly budgerigars; overgrowth may occlude the nares. Called also brown hypertrophy of the cere.