I have 6 chickens in a 6x8 coop with a fenced run of 12x6. I got them in May of 2010. By the end of the year they were producing 4-5 eggs a day,and continued that unti lthe fall of 2011, then they stopped laying andI I noticed signs of molting. No eggs at all until May of 2012. Then started out with 3 a day which dropped to 2 a day . It has stayed that way with no eggs every 3rd day or so. They are fed Agway Egg Producer since they started laying with occassional treats of yoguart, corn and bread .They have never seemed sick and appear healthy now. Are they showing age already or could I be missing something?