Found two of these white peacock tail feathers, about 150 meters apart.
https://www.inaturalist.org/observations/242183514
Very large flight feather found among a lot of other scattered feathers, owl pellets, and whitewash. My women's size 9 shoe included for size comparison--the feather was probably at least 18 inches long including the quill. The ID algorithm is suggesting Wild Turkey, Turkey Vulture, and Black Vulture.
plumes rousses