My flock of 8 chickens is on strike! They are not eating their chicken feed at all. They pick at it, but that's it. They have free range of our yard all day, but I don't think they can find enough to sustain them out there. I've tried 3 different brands of feed in the last 3 weeks, and they won't touch it. They're molting too, and it looks like they've lost weight. They were never picky eaters before, but they don't even dig into the scratch I put out for them. They are all alert and running around and pecking at the ground and the grass constantly as ususal. I'm thinking about keeping them locked in their run for a couple days so they have no other option for food, but I have left them locked up until around noon the past few days, and the feed still looks only picked at. Any ideas? Is this normal? Maybe the change in ingredients in the feed because of the change in seasons or something? Thanks.