Hi Folks. Hoping someone can help me figure this one out. Found one of my hens on the nest dead. Upon inspection the only thing I was able to find was blood dripping from her beak and an egg crowning. I added 2 T ACV to 5 gal waterer for the first time two days prior. That would be the only notable change in the environment. She's the first one we've lost in the two years we've had chickens. Any thoughts?