We got our first snow here last night/ today. Around 4 inches. But now, it's REALLY COLD!! About 7 degrees, and bound to get colder by morning. I checked on my chickens at about 6pm and they seemed to be ok. The water wasn't frozen then, but I was wondering if I need to check it again tonight? They are all in their straw henhouse (built inside a shed) Their water is in the outer coop area (still inside the shed) but is less protected from the cold. Do they drink at night? or just sleep? I usually go out and tend to them between 6-7am, depending on whether I'm working day shift. Should I go out now??