kelidei , The cold is definitely a factor. I have 8 RIR's, 7 are 10 months old, and one will be 3 years old in April. "Fanny", my eldest, molted December, 2008, and went on an egg strike for about 5 weeks. (THIS is what convinced me to get more birds!!) Watch that your birds get enough water. My birds drink 1/8th the amount of water per day that my 1200 pound gelding drinks per feeding! They need the water to put into all those eggs you're gonna start getting. BTW, I'm getting 3-7 eggs/day now.