This was a 20 months old Columbia Rock. She always laid soft or thin shelled eggs which continually were broken in the nest box. She had access to calcium, oyster shells, egg shells. I tried everything, nothing worked to correct this issue. I have another one with problems like this as well and her eggs also drops at night in the poop box without the shells or randomly during the day. I suspect they have egg drop syndrome. I got them home as chicks and they started sneezing. I feel this is contributing to the egg problems. I bought them at the feed store, I should have taken them back when they immediately started sneezing. I was told by one person at the store they were all vaccinated and then I asked another person and she said no. I feed them 18% feed. I have three production birds and was told they required this protein amount. This bird to me seems extremely fatty. This is my first necropsy so I am not sure if her fat levels are normal, I suspect not. I haven't been giving them any hen scratch for about a year, even then it was a small amount. I give only greens from the yard or vegetable peals and their regular feed. This bird grew faster than her two sisters. Her crop was always twice the size of the rest of my birds when I checked them at bed time. She was at least 1.5lbs heaver than her sisters. She was always an odd looking bird. She passed away in about 10 hrs after I found her not looking well, fluffed up on her perch. She refused food. The day before she was out and about eating and seemed fine. I feel that her being over weight may be part of why she died and maybe cancer. During the necropsy I found a growth like a balloon full of red liquid. It was about 2 inches round. There was also something small and hard too, not sure if that was normal. Where her eggs were forming may not be right. Her liver looked good. She did pass an odd egg that was in the pop box that morning. She was frozen and thawed before I did the necropsy. I am not sure if that would make her look different inside from being frozen. Any ideas would be great. Thanks.