Hen has one side of face swollen and dark crud coming out of her beak

[CanyonRunChick]

We have a Buff Orpington that has one eye swollen shut and dark crud coming out of one side of her beak. One side of her face appears swollen, like it's infected and the other side looks fine. She seems to have a healthy appetite and is hanging out, but keeping to herself. She is pretty much a loner anyway, as she if the only Buff that we have.
Our chickens free range.
What do you think her problem is and how can I treat her effectively.
Thanks for your help!!

 

[BantamLover21]

Could you post a photo? Sounds like it could be a sinus infection.

 

[Wyandottes7]

I agree. Sinus infections/respiratory diseases can cause swelling of the face. Pictures would help.

 

[Eggcessive]

Sounds like a respiratory infection such as mycoplasma, coryza, or others. Does her head have a bad odor? She should be isolated away from the others. Antibiotics such as Tylan 50 injectable 1 ml daily for 5 days. Terramycin and Duramycin10 in the water may slso be used. Click on here for a link to read: http://edis.ifas.ufl.edu/ps044

 

[dawg53]

Dark crud like this? If so, it's canker.