My two year old Red Star Olivia (in my avi) has been acting broody the last couple of days. Yesterday I brought her out of the coop and she drank some water. She had very watery stool. Today I found that she was sitting on an egg with a very soft shell that was cracked open and smooshed. The insides of the egg looked fleshy - like pale pink chicken thigh meat. It smelled like bad fish, and had a grainy organ (liver) feel to it. What could this be? Is something wrong with her? We do not have a rooster. Thanks for any help!