A video link showing a man cracking open an egg, only to find another egg inside has been floating around the internet. It has been the subject of much virtual debate: Is the video a hoax, or is this a possible occurrence?
This is a possible occurrence. The same chain of events that causes internal laying, (that is, a fully shelled egg works its way UP the oviduct, rather than down and out) causes a shelled egg to re-enter the shell gland and receive a second shell. This super-sized egg is then passed out of the body.
For more on this, check out this video.
Home to Roost 
Posted by Rick Greub on February 2, 2013 at 12:52 pm
one day I went into the coop to find the rooster all bloody on the back of his neck. The hens pecked the rooster. Blood was all over the place. Why?
Posted by chickenwoman on February 2, 2013 at 3:18 pm
That’s a very good question. There can be multiple causes. Was the rooster new to the flock? Younger than the hens? Previously injured? Was the coop overcrowded? What was their diet like? A number of things can possibly lead to this behavior; it depends on your situation and the flock.