@Wyorp Rock has a good point. When you clean the wound tomorrow, and you will be doing this every single day until this wound heals, trim all of the feathers away from the edges of the flap with scissors so none of them get tucked under the flap. They will grow back. The beauty of using a skin flap as a graft is that feathers will repopulate the wound. Without the skin graft, no feathers would grow back on the wound. But you do not want feathers tucked under the flap or it won't heal properly and could cause the graft to be rejected.