crumbs or pellets same thing, I use crumbs, other's say pellets are less wasted. I guess my girls are just neat eaters! Glad to hear you are getting them some "real" food. I made the same mistake when I was younger and had ducks...
yes, corn is not food....more of a treat for them, doesn't have any of the proteins, and vitamins etc that they need to grow properly...
some people feed scratch, they say it keeps them warm in the cold winters....but not nutritionally good for them
feed them lots of greens, kale, lettuce, grapes, apples, rice, pasta, etc....they will eat it all and be happy for it...but they must have the proper chicken feed as well
I just dump a bowl of grapes out in my coop (no cutting up, sorry girls) and I really think it is hands down their favorite treat. Your girls are lucky if you've got grapes to share with them!