This is for humans and it has a lot of 'may' and 'could' BUT I swear by it for bad poop (very low dosage over a period of two weeks). I once had an umbrella too that had gas in her poop, a sure sign that something was not as it should be and after three different antibiotic treatments and even an untifungal one with no change, I tried the APC vinegar in her water and it got rid of whatever it was she had and which the avian vet could not diagnose or cure.
https://www.msn.com/en-us/health/nutrit ... EM#image=1




