Hello; I am a newbie. I have had layers for about 7 years. I usually keep between 24 and 40 shaver red sex link chickens. Hardy and healthy. I buy 12 to 18 every year and get rid of them at around 3.5 years of age. I know. I'm a softy. Well. NONE of them are laying very well right now. I mean, with 34 chickens right now I am getting between 2 and 9 eggs per day! Terrible. This has gone on for about 2 months. This can't all be moulting, can it? They have indoor access to dark laying nests but spend most of their time out doors in a pen that is about 16 by 16 feet. I live in southern Ontario (Canada). Its cold, but they were doing better in January! The pen is muddy. Does that matter? They have adequate everything. I don't even know what I should be thinking about including in here since I haven't a clue anymore what to look for. Any ideas would be greatly appreciated.