Hardware disease?? Lol. Yes she had a fecal and there was nothing to see except a few cap worms..not bad. Shes already on the mend thank you, we're taking care of it. Either there's some resistance developing or she didnt get enough dewormer last time.
Yes, hardware disease. Its when a bird swallows a piece of metal like a nail or piece of wire. It gets stuck in their gizzard and will work its way through the gizzard wall and cause a major infection that will eventually kill the bird.
In my experience of over 15 years raising Sumatras they are by far the toughest birds I've run into. Mine have never been sick. Of course hatchery type Sumatras could be a different story I suppose.