I'm a new chicken owner in Los Angeles. I have a RI Red, a Barred Rock and two Americana's. they are older chickens and good layers. My question is...Do I need to be concerned with the cold and the rain we are having right now? I just went out to check on them and they are all in the roost. I gave then some more food in a dry spot but they are sitting tight on their roost. I have a tarp over the coop on one side and the top and thin plastic on the other side. Water is still getting in and it is a mess. My husband put some plywood on the ground but there is still dirt but not much of it is dry.