I noticed today that one of my IB Peachicks, around 4 months old, had some foam and what looks like thick saliva around her mouth. I also heard some gurgling sounds from her. Her neck, right under her beak, also looks a little swollen to me. This had to just happen today, because I spend a lot of time daily with them and she was fine yesterday, and even this morning. I thinking she may have a respiratory infection? I started her on Duramyacin 10 (spelling could be wrong) 3 teaspoons per gallon. I also isolated her from the others and started all of them on anti-biotics as well, since I don't know if it's contagious. I have been worming them monthly with Safegaurd (Fenbendazole) since their feet touched the ground, last worming was 3 weeks ago. Should I be giving her Duramyacin or worm her again, or both? She has lots of energy, I just want her to be well.