That temperature thing can determine sex in certain reptile eggs. Not all reptiles but a few. So temperature can change the sex of the hatchlings. But that is reptiles. Chickens are not reptiles.
It doesn't work that way with chickens. The hen determines the sex of a potential chick when the egg is formed based on which sex-linked genes she passes on. Sorry to inject science into this but that's where mythology meets reality.
If you want to, by all means try it. Have fun with it. Since the sex is predetermined by the hen if you have any effect it will be to reduce hatch rate. But see for yourself.
I will interject some more reality. Many of my hatches, whether in the incubator or under a broody hen, have maybe 3/4 of the chicks one sex or the other. It could be more males, it could be more females. Over time it averages out to 50-50 but if you just look at two or thee hatches it can be really skewed. So don't try it once and think you've reached a conclusion. You only have one data point, you'll need many more you can average out before you have any proof.
So good luck and have fun with it. Nothing wrong with having fun.
It doesn't work that way with chickens. The hen determines the sex of a potential chick when the egg is formed based on which sex-linked genes she passes on. Sorry to inject science into this but that's where mythology meets reality.
If you want to, by all means try it. Have fun with it. Since the sex is predetermined by the hen if you have any effect it will be to reduce hatch rate. But see for yourself.
I will interject some more reality. Many of my hatches, whether in the incubator or under a broody hen, have maybe 3/4 of the chicks one sex or the other. It could be more males, it could be more females. Over time it averages out to 50-50 but if you just look at two or thee hatches it can be really skewed. So don't try it once and think you've reached a conclusion. You only have one data point, you'll need many more you can average out before you have any proof.
So good luck and have fun with it. Nothing wrong with having fun.