My hen that i posted about earlier has passed. it took her 3 days to finally pass. yesterday i found one light Brahma up on the hill dead. Today i found 2 light and 1 buff huddled together under the bridge around 5pm, 2 have passed already. One is still eating and drinking but not very active. All the birds that are affected were bought with in two weeks of each other from tractor supply. They free range with my older chickens and ducks. All my older hens are fine. My millies are fine but they are kept in a tractor but in the same field. all the ducks are fine. so are the goats and dogs. I have 2 lights and 4 buffs left. I took them out of the field and but them in a tractor in the yard with vitamin and electrolytes in their water. All the chickens that are effected are lethargic, clear eyes, clear nose, normal poop, excessive thirst, not real interested in food, real skinny even though they are eating. This is spreading fast! Any ideas would be great!