White bird/feathers

Prime or basecoat white. Coat Soulblight Grey. On a simple feather decoration, this is enough; on larger surfaces, such as this eagle, drybrush white.

Paint the ends of the feathers (in the case of this eagle, the ends of the largest feathers) Basilicanum Grey, then feather it out (hue hue hue).

Then paint just the tips Black Templar.