Go gently one by one and pluck in a direction that't not going to tear the skin.
-Kathy
It's just making the wound bleed again....
If you pluck it you will disturb the blood clot! Wash it with some warm water soap, and then disinfectant with some disinfectant and then spread on it antibiotic ointment and cover it with some gauze and then cover it
Plucking is what is recommended in veterinary text books, and I have done this to several and have not had any issues with bleeding. Plucking the feathers will allow for proper cleansing of the wound.
-Kathy
So? Logick say if you have some loose pieces of skin, around the wound and you pluck them, the pooling motion will tare the clot, cousing bleeding.
I guess if you are really worried about causing rebleeding by plucking you could trim the feathers so that you have good acess to the wound and can still keep it clean. That may also be kinder to a frightened bird.