To my experience it really depends on what breed and who you get it from. If it is a hatchery and you want a rare breed, chances are most of them are roosters. If it is from a breeder and it is just plain what hatched out, you have a 50/50 chance. The difference is that some hatcheries have a lot of spare roosters due to the high demand for pullets, so if it is straight run, especially in "packages" or "assortments" or a rare breed, you're going to get a lot of roosters.
And if it is feedstore, I know my luck was mainly males. Even with ducks. I think it is the leftovers the seller didn't want.
And if it is feedstore, I know my luck was mainly males. Even with ducks. I think it is the leftovers the seller didn't want.