No, you shouldn't. You could speak to them about some of the conditions and see if this is an every day thing but, no, you shouldn't "turn them in". Every other thread on this forum talks about chickens with bare backs, bare bottoms, slimy waterers and how to prevent it, my chicken/turkey/duck is limping~could it be bumble foot?, etc.
I bet, any given day, there are many people on this forum who would not like anyone to see their chicken yards....heck, I drive by some pretty barren, sloppy, mucky chicken yards with dirty looking water. Livestock mess up their water...it happens.
Yeah, they aren't too smart if they are open to the general public and they aren't keeping things looking good but this is molting season for the birds, so they may look a little raggedy.
I visited Joel Salatin's place and found his poultry to be ratty, crowded, sickly looking and the waterers were green with slime and the man sells books and charges big money for tours of his place....I was very disappointed in the conditions but I still wouldn't have turned him in. He had a dead rabbit in one of his cages, for pete's sake!
Turning someone in should be for obvious abuse/neglect of animals....dirty water, missing feathers, flies on pig food(heaven forbid that pig slop should attract flies!!
), etc. is hardly enough to go on for your one time visit.
Why are people so intent on causing others misery in this world?