I have 2 hens with my rooster, one hen lays light brown eggs and the other white. The light brown eggs are turning out to be 90% male and the whitish eggs about 40% roosters hatch. So am I correct to assume that it is the hen that determines the sex and not the rooster? Or is it a fluke that the brown eggs are mostly male? and that over time it would even out to 50% each way?