Answer:
a) Feathers, b) Beak, c) Bone, d) Milk, e) Eggs, f) Hooves. (Bahr al-Raaiq vol.1 pg.106; Rasheed Trust). The byproducts of such parts will be pure even if the animal is not slaughtered according to the Islamic Laws of Zabah. (Ibid)
Al-Mahmood 18