Hi. It first started off with our easter egger rooster, Fred, for awhile since spring came our male guineas had started bullying him some, so he tried his best to stay away from them. He started after awhile acting a bit more weak, and I noticed that his feathers kind of stood up making him look more fluffy. He still ate, drank, and liked treats so I figured he was okay, just keep an eye on him. Then he started when he would have to eat to avoid being pushed around and stepped on by the others he would lay down and peck at the ground and when walking around, his wings would droop. A few days after that I found him laying in the back of the coop, not wanting to get up, he just wanted to rest. So, I went back there and got him out, he was pretty thin. I seriously thought that by the end of the day if I left him there, he wouldn't make it. So I set up an cage for him in our shed, and gave him a little of the only medicene we have which is Tylan 50, then let him eat some pieces of bread and yogurt. He also was sounding a little congested when he would breath, but after giving him the Tylan, he perked up quickly and stopped sounding congested like he did. I let him stay in the cage for about about maybe four or five days. It was getting close to when I was going to let him back out with everyone else because he was doing alot better, when my favorite paint silkie rooster, Johnny was slowly walking around, feathers standing up of course making him more fluffy then he really was, and his stool I noticed was about the same as Fred's, runny and yellowish. And of course, we had one of our older chicks get her neck pecked pretty bad by the hens, so I had a tough choice, her or him to go in the cage(because I decided to let Fred out when I noticed Johnny acting different) and I decided to let the chick go in first, for just a day or two for the wound to heal, then Johnny could go in. She was in there one day, the next day I found Johnny laying down in the coop(we have two different coops, the silkies in one, the bigger chickens in another) like Fred did. So I picked him up, gave him Tylan just in case, took the chick out and put him in instead. I did the same as Fred, let him eat some food, and when I checked on him later, he was laying down(It worried me because the whole time Fred was sick, he never laid all the way, just would sit down.) and the next morning, my sister went out and he had passed on. That was Saturday. He never gasped or sounded congested. Two days ago, Grace, an easter egger-english orpington mix chick(All the chicks are about two and an half months) started laying around, wings drooped, feathers standing up. I still hadn't been able to clean the cage, so I had no where to put him. So, I gave him Tylan, and after that, seemed to be doing okay. Up and around, eating and drinking. Didn't gasp or sound congested. Then, Mercy, another easter egger-english orpington mix chick did the same, starting laying around, feathers standing up, wings drooping, same thing. So, gave her Tylan, but she didn't really seem to perk up like Grace did. I offered her bread, didn't didn't want it, the other chicks did. When I held her, she would cheep at me but would kind of close her eyes and try to lay her head down. I decided to put them in the nestbox part of the silkies coop because the silkies never use it because they use the tote boxes inside the coop instead. She was the quickest to go. I went back out about an hour or two later to check on them, she was already gone. That was yesterday evening.. She didn't gasp or sound congested. Now, this morning, my sister went out and checked on them and came back in and said that she believed that Grace and another easter egger chick, Chickadee was dead. I hadn't had the chance to go outside and check yet,(I'm writing this), so she went back out to check on the rest and went and picked up Grace and was surprised when Grace started moving her legs, and Chickadee(Oh, Chickadee's the same one that got the neck wound from the hens, by the way) started peeping, but she told me that they were laying all the way down, so they are probably close to not making it. So, we are not sure what to do. Tylan helps, but only some. We have no clue what it is, or how to help them. But it is so frusterating to watch them go down-hill so fast, and try so hard to help them and not be able to. So, we really need some advice on how to help them, hopefully. But Fred's still doing alright. Thank you for reading.