Noticed this morning that a chicken had a foamy eye. Upon inspection this afternoon noticed the eye weeping and skin around eye is irritated(only one eye effected). Has mild diareah. Other wise healthy. This individual hen is top of pecking order, not sure if may have been in fight. There has been some feathers rustled in the hen house recently with a new arrival. Any thoughts on what it maybe?? Will monitor bird for next few days.