It's been awhile since I've posted here (at least a year or two). But I have a new flock of chickens--4 leghorns in one coop (they were with the other smaller chickens but were bullying them). Two are hens, two are roosters. In the other coop, we are supposed to have two roosters and 6 hens--but I think I only have one rooster in there. This is the first time we've had roosters. I am ready to start to see if the hens will sit on eggs. The hens will lay eggs in the same nest as others (there are about 12 nest boxes to choose from, but they usually lay in about 6 of them. I gather eggs twice a day (around 10ish and then again around 4ish). I have gotten as many as 51 eggs a week (I keep track of them every week). So to my question: when I let them sit, should I try and keep the eggs (after getting some for us) that I let them sit on in one box or keep them in the box they are laid in? When should I start candling to see if they are fertile? Thanks.