I cannot help you with finding a place to recycle the down, but I am going to offer you my reservations about doing so: a good goose down pillow can last up to ten years, but the down does eventually disintegrate, and after it does, the pillow is not much good–it gets flat and packs down hard. My grandmother recently opened up one of her 30-year-old down pillows, and said the contents was basically dust. Speaking of dust, old down will be dirty. It is likely to have a high content of dust mites and dust mite particles, not to mention mold, mildew, and who knows what else. Maybe the nylon would keep mites out, I’m not sure–but if it did, then it would also keep allergens in, which would mean that the down was not rigorously cleaned before being put in, and is probably not appropriate to use in bed pillows. Even if you have no allergic sensitivities, it would smell bad. One even has to be careful when buying a brand-new down pillow, to make sure it doesn’t smell.