I hatched out some EE and Marans eggs about 4 weeks ago, totally unrelated. 5 of the chicks seemed to slow down in growth at about 2 weeks of age. 4 were marans, and 1 EE. Last weekend I noticed they looked ill, so I separated them from the rest. They were lethargic, droopy wing, ruffled feathers, tails tucked, necks hunched. Then they started having diarrhea, which has ranged from a light tan (chick food color), to bloody black. I started them on corid 20% powder, 1 1/2 tsp per gallon. I made them a mash from the water and powdered chick feed, and started feeding it to them with a syringe 4 times a day in addition to their food and water they had available. One died the first night, but the other 4 seemed to perk up and be more active so I thought I had figured it out. After 3 days on the medication they were still the same. Not worse, but not showing any significant improvement other than attacking the syringe when it was feeding time. Voracious little raptors! Lol. I started doing more research trying to figure out what else it might be, and it seemed possibly ulcerative enteritis. After 5 days of the corid they were looking worse, so I started on oxytetracycline (that's all they had at the feed store). That was yesterday morning. This morning when I got up my favorite of the marans was dead, and the EE was having trouble keeping her balance. I'm at a loss at this point. Out of 15 chicks that hatched, these were the majority of what I'm pretty sure were the pullets. I only have 3 more that may be girls, and the rest I'm sure are cockerels. It's always hard to lose chicks, but especially when it's next year's layers. We really can't afford any more vet bills right now, so I have to do my best to try to treat these babies myself. Any ideas or suggestions on what might be going on would be greatly appreciated.