I'm assuming that what did it. My flock stopped laying by November and are just now starting now. When she stopped laying her comb shrunk but has doubled in size in the last week or so.Interesting! I didn't know their combs changed size depending on whether or not they are laying (after they mature). I know the color will change for that reason.
Mine kinda slacked on the egg laying front in January (only 19 from the 2) but picked up in February (42).
Bruce