Just when you thought you'd seen every possible chicken-related crisis, along comes a hen with a stinky behind and a suspicious-looking comb. The original poster, Jessicaajd, has done everything right so far, quarantine, a visual check for mites and lice, and a careful observation of appetite and energy. But that sweet, foul smell and the wet, matted mess around the vent? That's not just a bad day. That's a red flag waving in a chicken coop.
We've all been there. You rescue a hen, you feel like a hero, and then you realize the universe has handed you a biology puzzle wrapped in feathers. The sweet smell is the giveaway here. It's not the usual barnyard funk of dried poop, that's more of an earthy, hay-and-sunshine odor. A sweet, foul scent often points to an internal infection, specifically in the reproductive tract. Egg yolk peritonitis or a vent gleet situation can produce that exact aroma. The wetness isn't just moisture from drinking; it's likely discharge mixed with fecal matter, which explains the matting. As for the comb, dirt is possible, but given the other symptoms, it could be dried blood from pecking or the early stages of fowl pox. Either way, it deserves a closer look.
If Jessicaajd asked us what to do next, we'd say: stop guessing and start treating. Separate her permanently until you know what's going on. Clean the vent area gently with warm water and a soft cloth, then apply a thin layer of antibiotic ointment (the kind safe for birds) to soothe any irritation. The comb should be wiped with a damp cotton ball, if it's just dirt, it'll come off. If it's scabs, leave them alone. Then call your vet. This is not a "wait and see" moment. A hen eating and drinking normally can still crash fast if an infection is brewing in her gut or reproductive system.
The takeaway here is practical, not panicky. You rescued a hen, that's cluck-tastic. But rescue comes with responsibility, and responsibility means knowing when to bring in a professional. Don't let pride or fear of sounding clueless keep you from picking up the phone. A vet can run a fecal test, prescribe antibiotics if needed, and tell you if that comb is just grime or something more. In the meantime, keep her isolated, keep her clean, and keep her comfortable. And whatever you do, don't let that sweet smell fool you into thinking it's harmless. It's not.