When I was collecting the eggs, I reached my hand into one of the nesting boxes and once my hand touched something very strange, I pulled it back out. I looked inside and saw a very unusual egg. I picked it up (which was extremely heavy), and put it into the egg carton. I brought it inside of the house. All of my girls appear healthy. It is very cold outside, below freezing. But the chicken houses are insulated and heated. Thanks! What is this red thing attached to the egg??? I removed the thin coating off of the egg. When I cracked the egg open, there was a perfect yolk inside.