To be fair you don't want to feed to much maize. I get a lot of people come to ours and say we feed mixed corn. It's wrong , If you feed too much maize it will make your birds fat, just give them whole wheat it's just a scratch feed before they roost up at night, maybe a little maize when it's cold but not to much. I know it's a different kettle of fish for the game birds, but your average bantam does not need a high fat diet.
There's plenty of info if you look online about it.
Atb