Yesterday I put the 3 chicks that were 8 1/2 weeks old in with the hens. All went smoothly. Then this morning I went to feed and found two full size eggs in the nesting box and this little one on the floor of coop. Is it possible that one of the young pullets laid this? It is very small, and my hens all lay in the nesting boxes. I was so stunned, never saw an egg this small it is the size of like a robins egg. BTW until yesterday the chicks were on grower crumble and did not have access to layer pellets.