Chickens do occasionally shed intestinal lining. It's generally caused by some kind of irritation in the digestive tract. It can be from eating something different, they can find a new plant and eat a bunch of it, but if it's happening more than just occasionally, then a cause should be investigated. Internal parasites are a common cause. And sometimes that can lead to a secondary bacterial infection as well. If you suspect parasites, and you can't get a fecal test done, then I would recommend that you use a chemical wormer. The herbal stuff is fine for prevention and general health, but they just won't treat an actual load of parasites. I learned that the hard way a long time ago. The chemical wormers are generally pretty safe, and they are effective. Safeguard liquid goat wormer and Valbazen are both really commonly used and are effective against most of the common parasites. I use them regularly, I have never hurt a bird with them. If you do a search for the ingredients of the product you ordered, it contains: black pepper, common nettle, sweet chili pepper, garlic and oregano. The latin names on the label sound far more impressive, don't they? Honestly, if parasites are the issue, those aren't going to get rid of them. Parasites can also cause the crop to slow and back up. I can't say for sure if that is the issue with this bird, but if she were mine, in my flock, I would worm her to see if it helped. If it didn't, then there may be another health problem going on.
