I have 3 chickens only one chicken is laying eggs. This egg is from a barred rock. there is a white dot in the yoke, does this mean it is fertilized? please note that the other 2 chickens, one i know for sure is a female buff cochin, the other one i don't know what gender it is and it's not crowing or laying eggs. this is the one i don't know what gender it is neither the breed. it is 6 months old this is the female buff cochin. it is almost 5 months old and she isn't laying eggs yet.