- These feathers have been moth-eaten, mildewed or mechanically damaged during washing process, including the broken feather and the feather that has been damaged more than 1/3.
- Judgment Reference:1. Feather with 1/3 damaged area or more. 2. Bald feather quill. 3. Feather quill that has been broken off in the middle. 4. Part of feather surface detached from the feather.
