Mine have access to food all day and night. Considering there's always a perimeter of cat around their run, I'm not too worried about rodents. There are feeders in the coop for night time. In the morning, their outside feeder is usually still empty from the previous day. I generally leave it until 10 or 11, they're more interested in eating bugs and weeds. When the temp really amps up, I make sure they have easy access to food without having to get around. I also start bringing them treats, since most of those are cold-- fruit, yogurt. By late afternoon the feeder is empty again, but it's cool enough for them to scratch around and chase bugs. Sometimes I still bring them treats because they have a mind control device and there's nothing I can do about it.