black growth

We have Henski, a 5 month old Gold Laced Polish pullet that has a cough, has shook her head and slung snot, and has black, hard crusty growths on her waffles and around her eyes. She was walking around with her mouth open. She is part of our daytime free range flock (they have a luxury suite...

This is my favorite girl and I’m at a complete loss & badly need your opinions or advice!! She was part of a group that was given to us when we started keeping chickens...she survived the loss of her sisters due to illness/tragedy & trained the new girls how to live in the coop & freerange...