I've had a problem with what I assume is coccidosis with my young chicks…. I lost one of the 6 chicks after a few weeks, and then stepped up the dose of Corid - thank god for the info on these forums! AFter the one died, two others started showing similar symptoms - slower, heads pulled in, and not seeming to be growing as fast as the others. I've been giving a corid mash to them to make sure they got a stronger dose, and they seem to have picked up and are better. At least I hope so! But the sicker ones haven't caught up to the others - they're almost half the size and haven't gotten but a few head feathers while the others have theirs. They're all different breeds, except for two easter eggers, and one is almost half the size of the other. Just wondering if anyone has any experience with this? Will they catch up? At 6-7 weeks, the larger ones are VERY active and keep breaking out of my brooder of boxes with window screens. My plan was to put the three larger ones outside in the coop soon (it's in the 60's daytime, 40's at night), so last night I turned off the heat lamp to start getting them ready. The smaller ones seemed huddled and cold this morning, hopefully they're okay, but I'm thinking it's too soon for them without the lamp.