Well I honestly feed my girls both !! Not because i want to.... When I go out to fill their feeder, they have pecked and pecked until about half the feeder tray has crumbles and the other half is pellet.. Sooooo I guess they will make it what they want. i also throw in a slice of fresh alfalfa hay every now and then and they get a cup or so each of scratch every couple days. They are not free range so i try to give em a variety when I can. They always get the fresh veggie scraps I have, ie.. broccoli stems, lettuce, tomatoes, any veggie thats fresh.. I also got to my little local grocery store and they clean out their produce isle and put the soon to be bad veggies out back and I help myself. Not always a good source but some days.. its a great find.
But I also agree...... If you only feed them pellets...... they WILL eat them. hunger is a funny thing. lol