I've had chickens for years, raised many. The hatchery that my feed store uses is good. I bought Naked Neck chicks and they seem to be holding their own after some died. But I went back and bought 18 bantam Silkie chicks just 3 days ago. They look fine when we select them out of the brooder. At home, they seem to lay down and never get up.. I buried 3 Naked Necks and a total of about 12 Silkies with 3 more dead this morning. I've never had chicks to die like this. They are in a big box, fresh water twice daily and chick starter feed, heat lamp with thermometer monitored by the hour, room to move to heat or cooler. It's cool in my house where they are, but they sometimes choose to move into shade in the box. I've never had anything like this to happen. I've raised a lot of chicks and can't see that I'm doing anything wrong. The feed store replaced 3 free, but these 18 Silkie chicks were bought a week later and they are the ones dying now. I do have one chick that gasps and opens its mouth wide and throws its head up to breathe, but it got better and doesn't seem to do it all the time. I gave it some of the menthol/"Vicks" smelling ointment. I'm so discouraged to pick out the chicks and then bury them 2 days later. The investment is not a tiny thing, either. I don't even want to tell the feed store because they've already replaced three. I got 3 frizzled Cochins from the same brooder and so far they are fine. Could it be that they were tiny and somehow weak and simply bringing them home was too much? The Naked Necks are several weeks old now and we can tell when one is not thriving.