Does anyone know a good way to process a parrot skull without damaging the beak sheath? I've worked with birds before but they were starlings, pigeons and exotic songbirds so I'm not really familiar with how a parrot's beak sheath will hold up in maceration. I'm used to the beak sheath just sliding off the skull in a day or two. Will this be the same for a parrot? Or will it break down and discolor? I really want to start cleaning this skull. I have its full skeleton but that's not an issue to clean I'm just a bit confused on how to preserve the sheath as that's a very important part of a parrot skull both for identification reasons and for aesthetic.