One of my sweet hens became very sick. One day she was fine and the next acted funny so I brought her inside for a few hours and then I took her to the vet. They couldn't save her but saw strange "balls or cysts" with the ultrasound inside her abdomen. I had them open her up post mortem to see what they were bc they said it was not eggs. Does anyone know what this is and what causes this? Poor baby- she was 4 years old and I have had her since she hatched. I am afraid for my other little ladies!