I searched the forum for answers but can't find anything that really fits what I see on my chickens. 21 RIR's. Dh gathered the eggs this morning and came and told me that my chickens seem to be lifting their legs a lot and some have fluffed out feathers. I went to go see them and I noticed some of my chickens have an off white colour to the tips of their combs. Now they are not solid white or purple and no black spots, but more like a pinkish off white. the steady temps here have been about -19C (-3F) its been colder in the past few weeks and they haven't had any issues, so I am confused as to what is going on, and whether this is the first sign of cold or frostbitten combs? I laid down 2 more bales of straw, and refilled their nest boxes with fresh straw too. there is good ventilation in the in-barn coop and no drafts. Once I laid the fresh straw they stopped lifting their legs so much. Now its not all chickens that are doing this but the ones with the lighter coloured combs, I did a thorough check on them and they seem fine, no health issues that I can see, their vents are good, their crops are good, they are eating and drinking fine. However the last 5 days, I went from getting 21/21 to 18 or 19 out of 21 eggs, the inside temp of the coop is a steady -10C (14F) so I cannot see this being due to cold, or am I wrong? any other health issues that could cause their red combs to lose their colour and diminish egglaying? this is my first winter with them, maybe I am worrying for nothing?!!