What does this look like to you? These chicks are between 3 and 5 weeks old (staggered hatch between two broody hens). They are in an outside covered 25×15 run during the day and in a 4×4 brooder coop at night. They eat organic 18% chick crumble, plus a little handful of mealworms every couple of days. I am still relatively new to chickens (2 years in), so not quite sure what's happening here. There is no blood, and I haven't seen any of them picking at each other. About half of them look like this. I do see pin feathers coming in. Is something wrong or am I just being a hypervigilant Mom?