My Road Island Red that is just over a year old started acting funny last night. My other three hens were asleep on thier roost and she just lay there sleeping on the floor of her lay box. This morning all the hens came out to eat and hunt for food and Old Red was missing. She was still in her laybox but alive. I picked her up to have a look at her and a runny watery red liquid came out of her mouth. It was several Tablespoons of liquid. She could not stand and then she flapped her wings a little and then was gone. She seemed FINE all day yesterday and was just gone today. My other 3 ladies are acting fine. Anyone out there seen this before??