I purchased 6 eggs on line and put them in the bator 5 days ago. I had to chuck three of them today as the yolks had become dispersed throughout the white. However the remaining three are okay. But one of them seems to be more developed than the others. It has thicker veins and a bigger body than the other two which still look pretty fragile. Does this possibly mean i have a cockerel and 2 pullets? If not any other reason that there would be such a difference. They were all put in the bator at exactly the same time. I have changed there positions in the bator, i rotate them round in a circle, so it's not likely to be a hot spot. P.s they are RIR bantams.