I just added three 12 week old pullets to my flock. One of them looked a little run down, so the lady I purchased them from gave her to me for free and suggested I keep all three separate from my existing flock. In hindsight I should have probably passed on all of them. The first one that was sick was squinting her eyes, but they weren't swollen. She also wasn't keeping herself well groomed. She had poo on her feathers and was missing feathers around her vent. She was eating and drinking fine though. To my inexperienced eyes she just looked like she felt the way I do when I get bad cold or allergies. Once I got her home I noticed she had thin watery discharge from nose and was sneezing. That night I noticed she was breathing a little funny. The NEXT day she looked a bit better, but now the other two have runny noses and are sneezing! So far everyone in my existing flock that I have kept separate seems fine. I looked at a link someone else posted about respiratory diseases, I don't THINK it's anything life threatening. There is no swelling or smell from any of them. All are eating and drinking OK. Poo seems normal (I love that I can search "normal poo" on this board and find pictures!) My question is, how long does it take for the "less severe" respiratory diseases to run their course? I hate keeping these bigger girls in such tight quarters (Medium dog kennel) but I only have the one run and coop and don't want to risk the others getting sick. Is two weeks (like the lady I got them from suggested) long enough? Thanks!