I started raising chickens 2 years ago and I was getting 5 eggs a day from 8 hens. Last year I bought an incubator and added another 12 chicks to the mix. With the increased size of the flock, I decided to let them go free range. They seem very happy and active, but since I let them roam, the number of eggs dropped. At first I would find a few eggs around the yard, but then I found none. I thought they must be hiding them, so I put them back into the fenced yard, but still, no eggs. None in the last 6 months. I looked for shells in case there was an egg-eater, but there are none. The chickens are in the same area as 2 guineafowl and 2 turkeys, but they leave each other alone. I even tried keeping the chickens inside for a few days to see if they were laying, but nothing. I read that some worms may cause them to stop laying, so I treated them for worms, but still nothing. The chickens all seem to be very healthy, so I am puzzled. Can anyone tell me what to try next?