I have out of habit watching their poop. Is the typical bird worm big enough to see move in their poop? Mites were hard enough to spot when I was young, I have been so busy with my projects that I have not yet started a mite program. If ash would help, I got ash. My Grandmother feed use 1/2 piece of burnt toast every meal, to absorb toxins in our food. She also sent away for a light gray tan hard cube she would brake up into powder and put a little in her tea. I tasted it once, it tasted like dirt or clay, as to my memory. She was a very interesting lady.
One of my girls had tapeworm. They look like pieces of rice blobs that move and change shapes. I wormed the girls with Valbazen to get rid of them. (2 treatments)