I just noticed one of my pullets was bleeding from only one nostril. It doesn't sound raspy, it isn't acting sick or injured...it isn't sneezing and seems otherwise fine. I saw it throw up a bit...and that's when I noticed the blood. It's in the run and I haven't been able to catch it yet. There is no blood in the coop...no bloody stools, no other bird seems affected at all and the bleeding is coming from only one nostril (it's not dripping blood). What could this be? I' searching and finding nothing online.