My hen has one side of her nose damaged and doesn't appear to be able to breath out of the nostril. It appears to be crusted over. I have been trying to soften it up in hopes of helping her breath out of the side. I don't' know what she did to cause such damage. I suspect she jumps of the top roost and banged into the walls. I have since lowered there roosts. I brought her in to treat her again, and the other side is plugged up. She is having a touch time to breath. Can chickens breath out of there mouths. She is 5.5yrs old. Any suggestions. Thanks.