Just found this thread from way back and thought I'd bring it back to life. You guys are so full of information that I'm hoping that you'll be able to help me. I had 15 older chickens (maybe 3 years old) and added 18 new hens (all were hatched in Feb/'March this year). the new hens have been out in the pen with the older hens for a few months now and it seems that just about all of them have stopped laying! I thought for sure that after a few months, any shock of putting them together would be over, but seriously, out of 33 hens, I'm getting 2 eggs a day. What in the world is going on!?