I am new to having chickens. I have 4 that I got this past summer (2017) and they have done well and are laying great. In winter they are laying 2 a day instead of 4 a day, which is fine. My problem is now that we are into winter (Mass) my hens aren't eating well. They are refusing their layer pellets (I have not changed the brand). I also got them 5 scratch grain which they hardly will touch (They liked it at first but now don't bother). I have been working hard to keep their water unfrozen as I thought this might be the problem. I throw out oyster shells or grind up their baked shells. They love oatmeal or cooked rice or cooked split peas. When I give them this right before they go to bed, they gobble it up. At times I have given during the day as they are not eating the pellets. But the food freezes so fast that I have to bring in the uneaten and let it thaw then take back out again. I'm worried they aren't getting enough of what they need... the pellets. I also mixed pellets into the oats when I cooked it, etc and then it got eaten... suggestions???