We have 5 girls and no rooster. They have been laying in one or the other of 2 nests for about 9 months. Over the past couple of months they have been moulting and we have only been getting 2 eggs per day "in the nests". Tonight I went out to collect the eggs and got 2 in one of the nests. When I walked back around to where the girls were, I found one egg on the ground and it was not warm, it was cold like it had been there for a number of hours. My question is why would one of the girls, who normally lays in the nest, all of a suddenly lay on the ground?????