I have four chickens and a rooster - with eight chicks only a week old. The new chicks are from a hen I acquired about six weeks ago. When speaking with the person who takes care of the chickens, he claims the new chicks are from a rooster different than the one I have - the chicken was inseminated by a rooster prior to my purchase of the hen. I am doubtful but am ignorant about the time between insemination and laying that an egg can remain fertile. Simply put, is it possible that a chicken can be fertilized by a rooster and then three or more weeks later those fertile eggs can be laid? Thanks for any feedback.