My family is new to raising chickens and at the end of June we got 3 baby chicks and cared for them, built them a fancy coop that we put them in at night - they just come back there really every night and we shut the door. They were suppose to be 98% female but we got a rooster. But he is awesome and they are always in a little group of three. Yesterday when my son returned from school around 3 he noticed that one was gone. I think they are too young to be mating and brooding though I am really hoping that might be why she is missing. So my question is - Can a Salmon Favorelle start having fertilized eggs at almost 5 months with a rooster about the same age? My fear is a hawk got her - the rooster and my other hen are acting strangely - but it is also raining and they hate to come out when it is raining so cannot really tell if that is the reason or if they are scared. I am just really hoping she is off sitting on some eggs and our property is 3 acres so maybe we just have not found her. It does not help that she blends in with the dried leaves.