Cere Overgrowth in Health Questions and Tips Posted April 4 My female budgie had an overgrown crusty cere which started about 18 mths ago. Avian Vet was not concerned. However it started to peel off today as it was obviously ready and scraped off without discomfort to her with my fingernail, like a scab. Just one tiny bit left a bit of pinky patch (just like a scab). She is fine.