Thank you very much! :hugs I usually just study colour genetics, so this had never come up for me.
Even at my advanced 56 years of age, I can still learn something new! :D
If there were a way for us to be able to affect the gender of the chicks, there wouldn't be so many cockerels given away at the end of the summer.
Unlike snakes and other reptiles, temperature will not affect the gender. This is decided the same way human babies get theirs: by the father's sperm.