How do I know which eggs to put in the incubator? Do I just grab a bunch and hope that they are fertile or should I put my rooster and a hen in a closed room for a while first? I understand it takes a week or so before candleing will tell me if they are fertile or not.
Go to the links at the top of this page and you can find pictures of the fertile bullseye. If your rooster has been in company with the hens and he is old enough you should have fertile eggs. Just crack a few open and look for the bullseye.
I have a hen that is often in the laying nest when I go to get the eggs and she snapped at me once. Should I just leave her and the eggs in there and see what happens?