Coop 1,1st hen, RIR laying 32 weeks, 5 days ago: displaying bubbly eyes, sight sneeze started second day. treatment so far, crated alone in laundry room, 2ml of long acting penicillin 2 days 1.5 ml penicillin today. One eye closed bubbly, staying crouched is eating and drinking treated water, was treating with sufamethione since Sunday-Tuesday changed to corid because of coop 2, also treated with oxine in vaporizer until Tuesday-should i continue? corid in water-er because of next 2 hens. I believe this started when they stayed outside because the coop light failed, i didn't notice and they when in the freezing rain overnight when i did. No one else is sick or looking unwell. respiratory aliment? Coop 2,2ND hen Barred rock 27 weeks old, comb showing still immature, pale not laying. started 2 weeks ago, crated 1 week ago, having trouble using left leg, walking like a parrot, thought at first she sprained her leg crated so she could heal. Now after finding one hen dead immature,light colored comb 27 weeks, and finding another who( 27 weeks immature,light-colored comb) died within 8 hours of finding her unable to stand, then hen 3. giving 1.5 ml penicillin in case there is a infection causing her leg problem. Coop 2, 3rd hen, barred rock 27 weeks old, immature, light colored comb, displaying dizzy, can't maintain balance, crated with hen 2, gave 2 ml penicillin Tuesday, Thursday. after reading symptoms act like cocci, treating with corid power since Tuesday night. Treating all coops for cocci. Coop 1 preventive, Coop2 severe infection treatment. I added the penicillin because they didn't seem right, when I realized it might be cocci, I left off the penicillin yesterday because she was standing mostly OK, this morning she was back to falling over and completely unbalanced, gave 2ml. For coop 2, I am in the middle of a rat/ mice explosion. I have found the mixture of plaster of paris-peanut butter- veggie oil treatment and today no feces inside the feeding tube. the mixture is still being completely eaten , so I know their still in the barn. I have cut the feed to what they will eat during the day to try to cut down on incoming rodents. when I sweep the walkway outside there door yesterday it was covered in rodent droppings--never in 3 years have we had more than maybe one, two. Of the 5 other BR hens in this coop 4 have cherry red combs at least two are laying, i think a another is laying but have only gotten 2 eggs at a time, the fifth has an immature, pale comb and seems fine. I feed free choice soluble and insoluble grit, boss once a day and 16% or 18% layer pellets. does anyone have a suggestions?