All of my former poultry experience is with industry birds. They were feed only once a day (at most), and therefore right after eating their crops would be full. So I've kept an eye on my chicks eating habits and their weights. They're all gaining at about the same, steady rate. And I see them eat often, a bit here, a bit there. But so far I've never seen them have a full crop. They're almost 6 weeks. I'm thinking they probably just graze so it never really fills up. If any of you, with all of your backyard experience, could let me know if this is normal I would greatly appreciate it. Thanks bunches!