\" \" Chicken eggs look the same whether they're fertilized or not. So, why don't your supermarket eggs ever surprise you with a baby bird cracked into your frying pan in the morning? In industrial egg production, there are no roosters — in fact, industrial egg farmers immediately kill any baby roosters just as soon as they're born. Fertilized eggs will have dark splotches in them, or might be entirely opaque, depending on the stage of development of the chick. It's perfectly okay to eat a fertilized egg — in fact, some fad diets and specialty egg companies promote fertile eggs as being healthier, but so far nobody's been able to back these claims up with scientific evidence.