chicken with wet and soiled rear end

[WH Farms]

what is the cause of one of my hens to have a wet and soiled rear end and what is the treatment? hen"s feathers are always wet and drip water like droplets on rear end feathers and hens back end is soiled with white bird poop

 

[JakRat]

Not to be gross, but can we get a picture!

There are a lot of different things that I have seen on here, and a picture would help alot for posters.