I have a poor sweet silkie hen who is sitting on some eggs to hatch. I have been taking good care of her...hand feeding her and bringing water to her. But today, I noticed she is wheezing when she breathes. It sounds terrible. I got her out to examine and she sneezed a bunch. It sounds like she is sick. But she is otherwise acting normal. What should I do for her? I've never had to doctor a chicken with medicine so I am not sure what to give her.