chicken sneezing, rattles, no other symptoms

[goatchick]

I have separated this chicken from the flock, should I have done this? will it make a difference? should I keep it in a warmer place? two or three days ago it was 60 degrees outside here, now it's in the 20's at night. She is at the bottom of the pecking order. So far it sounds like infectous bronchitis but haven't heard any other birds being sick yet. Can they get this even if they arn't exposed to outside chickens?
Is there anything I should be doing? Thanks, Dianne

 

[LynnGrigg]

Get some Sulmet from a feed store and mix it according to directions in her water. I'd probably treat the whole flock. Colds are pretty contagious. The Sulmet worked for mine back in the spring.