this may have been discussed a million times...but I see alot of people stating they use pine chips/shavings over hay. I have to say I started using the pine shavings but found my hens would eat it down like food. That worried me? how well can they digest wood!!?? So I switched to plain ole' bale hay and have never had a problem with them clogging their crops...they sometimes swallow long pieces when competetively swallowing down treats they are afraid someone else might steal, so sometimes I see little 'hay poops' but knock on wood never had a problem with blockage. The pine shaving make me nervous..... How many people here use hay and how many use shavings???