Ruffled feathers, but still some preening. Seem to be eating well. The flock is some that were hatched a week before the others. Hatch was April 18 and 24. They are about 2.5 weeks and 2 weeks. The olders got their feathers ruffled before the youngers who are just now starting to get their feathers ruffled. They stand hunched. But they all also run around at times. Poo is pretty normal usually. No blood. Loose 10% of the time, though I don't stand around for hours watching. They are eating homemade feed. They're eating a few tenebrio molitor larvae (mealworms) each day and a homemade chick starter (18.7%) with these items in it: Field Peas Wheat Corn Alfalfa Pellets Fish Meal Millet Sesame Seeds Cultured Yeast Diatomaceous Earth Oyster Shell Lentils Kelp Salt Vitamins/Electrolytes They are in a brooder house. Warm enough under one of the 1940s Plamondon hover with two lights. They moved here on Friday of last week. Temp is variable depending on how close they are to the lights. It's at least 90 by the lights. But in the 70s way out at the edges of the brooding area. Drafts few. The hover has a skirt on one side. They have a feeder that doesn't get hardly any poo in it. None yet anyway. I ditched their other feeders that they kept flicking pine shavings in and pooping in. I change their waterer 2 times a day. I changed their pine shavings yesterday. They are getting grit. Tiny stuff. Granite. They were on Corid amprolium 9.6% at 2cc a gallon until last Saturday when their feathers started getting ruffled. The 2cc/gallon is supposed to be preventative. On Saturday, I switched to 4cc/gallon. They are not getting better and it's been 5 days. More and more are getting ruffled feathers and hunched shoulders. Why? Please any ideas? Let me know if you need more info. Thanks so much!