I have a trio of Mille Fluer Old English bantams that have always laid very tiny eggs- some have been completely empty or with very little yolk. They are over a year old now and are still laying these tiny eggs. I thought maybe after time that they would start laying regular eggs but haven't yet. Has anyone else experienced this with their chickens? If so, how can I correct this problem. I hate to give up on these beautiful chickens, as my intention was to breed them.