So, I have a mixed flock of 15 hens. Brahmas, Orpingtons, Wyandotts, Australops, Leghorns, Barred Rocks and Auracanas. They range in age from almost 3 years old (about half will turn 3 this May) to 2 years old to almost 1 year old (Auracanas (3 of them) and brown leghorn (1) of them). I replace a few chickens that I've lost to predators or other reasons usually every year, but I've always had 12-15 chickens at a time. I write down the number of eggs I collect each day on the calendar, and for the last 2 months, I'm getting 1-2 eggs per day on average, some days zero eggs. I'm averaging I guess about 4 or 5 eggs a week lately, which I think is ridiculous from 15 hens. The only regular hen seems to be my new leghorn. She's the only white layer, and I get a white egg nearly every day. The last couple winters, I noticed a decline in egg production due to photoperiod, cold temps etc., but it was never like this. Are my chickens too old and need replacing? I'm not sure that's the case, since I have 3 Auracanas under 1 year old, and I haven't seen a blue egg in the coop for over 2 months. At the same time, they are eating just a ton of food still, but not giving anything back, and it's starting to get to me! Any tips, other than "be patient" . I'm tired of feeding them, and not getting eggs back! Do I need to start trying to figure out who's laying and who's not and culling?