https://www.backyardchickens.com/forum/viewtopic.php?id=16008
Check out that link. It's got good photographs of fertile vs. non-fertile eggs. The longer a fertile egg sits before being refrigerated, the bigger the little bullseye gets. If you collect frequently and refrigerate promptly, there's hardly any difference at all between a fertile egg and one that's not.
Check out that link. It's got good photographs of fertile vs. non-fertile eggs. The longer a fertile egg sits before being refrigerated, the bigger the little bullseye gets. If you collect frequently and refrigerate promptly, there's hardly any difference at all between a fertile egg and one that's not.