I am a new chicken owner that lives in the city. Therefore, I purchased Red Star (sex link) chickens from My Pet Chicken so I wouldn't have to worry about falling in love with a chick and then having to give him away when I discovered I had a rooster. Well this morning I heard this terrible noise, only to find that one of my "hens" was crowing at 5 weeks old! How can this happen? I thought sex-link chicks were a sure thing! I am heart-broken.