My father in law visited for a few days and while he was here, one of the chooks died. She was not very old (under 1 year) and seemed to be ok but we found her dead in the morning. He had a look at her and said 'I don't think its what killed her but you might wana check your chooks as this one has got "pipps" and that makes her tounge sore so she cant eat even though it looks like she is picking away on the grains.' We picked another one of the girls and he showed me what appears to be a scale on her tounge that could be pealed of without any struggle from her. It looked like a shell or scale and was hard. What is it and how do I cure it. I only feed my girls PREMIUM layer mash, no cheap pellets, and kitchen scraps plus a lot of veggies i.e. lettuce, carrots, boiled sweet potatoes, and fresh corn. I have lost 4 girls in a month now and need to know if it's serious. Thx.