I have 11 seven/eight week old true Ameraucana. They are healthy, eating and poop all seem fine. I am feeding medicated crumbles (what the breeder was feeding), they get fresh cool water twice a day. Grit is always in their coop. I have given them crickets, dried mealworms and fresh tomatoes a few times. Well ,several times now, I have seen them pick up a feather and eat it.. I mean gobble it down..big feathers! Are they missing something? Is this normal behavior?