Ok thats good the chicks are semi seperated so you can dose them separately from the others. Im not 100% sure of the dosage but im guessing the chicks will need a different dosing rate. MG is a respiratory infection, chickens eyes are tied to their nasal passages so thats why they get bubbly eyes with this infection. The wheezing is the infection in her lungs, she is probably shaking her head and stretching her neck trying to clear the mucus. Might want to get some nutridrench if you dont have any. Its a liquid vitamin that is quickly absorbed. We will hard boil some eggs and chop them up really small and feed a tablespoon or 2 with a few drops of nutridrench on it. Eggs are packed full of the nutrients for chickens and they love them and the nutridrench will give a little added boost. But I would keep giving them all the tiaguard.