Hi there. I'm picking up some rescue hens this afternoon (they were rescued from a local battery farm). I realise that they will need to stay locked up for a week or so before they are oriented enough to join the rest of the flock that free range all day. To this end, we have commisioned our bigger hen house and run and I was wondering if it was suitable to spread a bale of mulch hay over the base of the run so that they have something to scratch and poke about in? The reading I have done says that this is common in colder areas, but as it is coming into summer here, I wondered if there are any problems with, for example, moulds, etc in the hay?