I was curious, does the male determine the sex of the offspring, as in humans? I ask because I am hatching my 3rd set of eggs from my Rhode Island Red Roo and for the third time I am having a very high ratio of pullets to cockerels. The first hatch was the Rhode Island crossed with my barred rock hens to make a black sex link and I hatched 9 eggs, 6 pullets and 3 cockerels. Flushed with success, I did it again and this time hatched 11 eggs, 9 pullets (!) and 2 cockerels. My third hatch is 13 eggs, this time the Red crossed with my Silver Laced Wyandottes to make a red sex link, and it is still early, but so far 4 chicks have hatched and 3 are pullets. I may be counting my chicks before they hatch (yeah, I just said that) but in the early going it looks like I am set to have another pullet heavy hatch. I am wondering if I have a magic rooster that produces females at a much higher rate!