This is my first winter with chickens. It turned cold at christmas, has even snowed. Its been ranging from 20-50 degrees for the high since christmas. I have about 100 chickens. I was getting from 50-60 eggs a day and then they went to 30 for a couple days then in the teens for a couple days and none since. I did decrease their feed by half because I was told that I was feeding too much. Is it because of the cold or decreasing the feed? would love some input on what the problem could be. I don't want to have to buy eggs and in another week I will if they don't start laying. Thanks for any advice in advance.