We've just started our backyard flock. Raising 4 chicks, from 3 days old, who are now 6 weeks old. (2 BW & 2 ameracanas). About 2 weeks ago we lost one of our ameracanas. We don't know what happened. She started standing in 1 place, fluffed feathers & wasn't eating or drinking. Fed her water with electrolytes & probiotics through a medicine dropper - made a mash of feed & the water mix. It was a quick onset. Literally started showing signs that morning & died that night. NOW, Mellow, my gray blue Wyandotte is doing the same thing. She started showing signs of exactly the same thing. Eyes closed. "Napping" on the side. Standing alone. No energy. Barely eating & drinking. She's quarantined with water with electrolytes & probiotic & - mash for food. This started Saturday afternoon. She's made it through the night but I'm so concerned. She doesn't look good. Does anyone know what this is? Or why it's now happeneing again?? Am I doing something wrong??