My 5 year old Rhode Island Red has been sneezing a lot and has a runny nose. Her eyes are also sort of watery. She's been eating, drinking, foraging, as normally as the other chickens and they do not seem to have any of her symptoms. She's also been lying down and sleeping a lot more than usual. All of my chickens are currently outside in a coop and I was wondering if I should bring Button inside to treat her. I have left over sufadimethoxine soluble powder, so would that be helpful to her? Does anyone know what I should do to help her get better? Thank you in advance 
