Pasty butt is where poo clings to a chicks vent. It is simply a result of being cold. I am not sure why it happens but that is usually the cause. The chill likely came in transit from hatchery to your home. Cleaning the vent and adjusting the heat source for your birds will take care of pasty butt.
I have become increasingly dedicated to using all-natural products on myself and in
my home, so it was no question that I was going to use an all-natural solution for my