I have approximately 20 chickens, all hens, and all over 3 years old. Last week one of them laid a tiny egg. The next day, one of the hens was behaving oddly. She sat still for much of the day, not venturing far. She also failed to jump on the roost in coop at night. The next day, the same chicken sat with her head tucked down, somewhat retracted, out in the yard. When I approached her for inspection, she moved (although slowly) and showed no visible signs of stress. I checked legs and wings all which appeared fine. Again, she did not use roost at night. The third morning, I noticed her on the floor of coop, but she waddled out the door with the rest. After putting my kids on the bus, I went to check on her and she was on her side with her eyes closed, but still alive. The others were pecking her terribly and I kept her separated until I coukd return later that afternoon. She did not make it. Now, I don't know for sure that she laid that super tiny egg (she is a red sex linked) as I have 20 birds. However, that was the beginning of this strange behavior that seemed to mysteriously take an otherwise healthy bird. Coukd she have been impacted with a large egg? Could that egg have broken inside her? Today, almost a week later...I found another tiny egg. I'm worried I will lose another bird. Can someone help?