I look forward to some comments on pine shavings as bedding also. All of the chickies that I raised this year from incubated eggs were always put on chopped (sizzor cut up from a bale) straw. Just because the feed stores suggested that their easy to sell, easy to handle pine shavings were the thing to use, I wasn't about to use bedding that was not something that I would feed to a chicken. I've seen baby cockatiels fill up their crop with pine shavings & not be able to digest it. The 2" to 4" pieces of cut straw worked just fine, it wasn't dusty like the shavings; they enjoyed picking it up & playing with it; chickens need fun things to do............As for adult chickens & putting it in their coop, I read that straw gets moldy easier & pine shavings are better in damp conditions, this was in reference to creating a little winter heat by not cleaning out the bedding & just put fresh bedding on top until spring; good ventilation is needed for this method. Layers of bedding with droppings become damp & that's where the mold can form especially with straw. I have put pine shavings in my adult coop & bottom of next boxes with straw on top they pecked at it the first day or two only & had no problems.