This morning I was giving my ill hen her antibiotics for the rattle in her chest. I noticed that her vent was prolapsed. I came in and made a mixture of warm water and antibacterial solution in a squeeze bottle. As I was drying her off after cleaning the white discharge this fell out of her vent..It has no smell and it is heavy.. I am sure that she is going to feel much better. I will give her another cleaning in a few hours.