Since Friday when my SF hatched her chicks the temps. have been in the 70s and 80s. After two days I took her hay nest away and gave her a thick pile of pine shavings instead, so the chicks could have an easier time of moving around (they're very active). Today it's not likely to reach 30 degrees and there is strong winds and tonights lows are s'posed to be in the teens. The coop is draft free and mama's crate is cozy, but still... Should I give mama some hay tonight to help her keep the babies nice and warm?