Not sure but I am wondering if it is possible if the same one did this. The first egg she dropped right in front of me. We just checked on them and I found another one laying on the floor. We went to close the coop when she came out into the run. My husband picked her up and took her inside and set her down. She then walked up on the walkway to the run and I noticed her looking all puffed up. That is when she dropped the egg with no shell. We noticed that about half the girls had really swollen crops. They free range about 8 hours a day. Today was actually about 15 degrees cooler and overcast. Which makes me wonder did they eat more than usual. We went to the coop and put extra grit and oystershell inside. The one that laid the one right in front of me has been laying since 12 weeks old. Any suggestions as to what is going on will be greatly appreciated.