I got 8 porcelain d'uccle chicks last week, ordered 6 and all were fine when I got them. After 2 days I lost one, no idea why, it seemed like it had shrunk overnight but I was watching them quite a bit the day before and didn't notice any problems... After that I gave them a bit of yogurt and again all were acting fine. I have a rubbermaid bin brooder, a bit of acv in their water, medicated starter crumbles, no treats (except yogurt one time), they were on paper towels the first 3 days which was changed 3x a day, then switched to pine shavings. Temps have been between 90-95 degrees and they have not been huddling except occasionally to sleep, usually they are spread out running around. No drafts of predators as they are in my laundry room right now. So yesterday I noticed one chick who's wing feathers were not really coming in like the others, but it was acting fine so I didn't think much of it. This morning it was dead... This is my first batch of chicks, all others I got older and I have no idea what I'm doing wrong! If you have any ideas I would appreciate the help, I don't want to lose any more!