I recently lost 3 of my girls to infectious bronchitis. Because of having 2 roosters and losing 3 girls I decided to add a 6 more girls to the flock. They are all between 6-8 weeks of age. The newcomers are currently separated in their own little coop/run away from the big girls. On Friday I noticed my little black Silkie, Oprah, and my Belgium D'uccle, Pipsqueak, both had what looked to be chicken lice. I immediately treated them along with the others and cleaned their coop. This morning, I went out to check on the little ones and noticed that Oprah's eye was bubbly. I immediately got concerned since this was one of the symptoms we had with the bronchitis. Although unlike the ones I lost to bronchitis, Oprah seems to be breathing normal. Her symptoms are bubbly eyes and her nose is running. She actually sneezed a giant snot bubble at me when I picked her up! I moved her into a rabbit cage inside our camper in hope that I caught this before any other chicks become infected. Does anyone know what illness this sounds like? I have injectable Tylan 50 however, she's so tiny I'm not sure how much I should give her. Is there any other medications I can get from tractor supply that could help? I really do not want to go through losing anymore of my girls. Also, she is still eating, drinking, and moving around. She just seems to get tired really fast.