My 22 weeks old pullets love to eat their pine shavings bedding. Does that mean, anything is missing in their diet? I feed them Purina Layena (even though they have not started laying yet), a handful of scratch in the evenings and once in a while goodies like yoghurt, crickets, mealworms etc. Oystershell and grit is always available to them and nothing is different in their diet than in my older hens diet. Even though I let them freerange for most of the day, they go for the shavings where ever I spilled some by accident or they eat some in the coop.