One of the River Cottage programmes had Hugh Fearnley W. hatching out some chicks, he kept all the eggs in a cold place until he had enough to put under broody hens, the "eggspert" (sorry!) helping him said he had made up numbers from shop-bought eggs before.
Obviously there has to have been a cockerel involved somewhere along the line...!
Ten x
Oh dear lord silly nanny spell checker, ok then a Magnificent Male Chicken.