I know cornstarch really works!!! Its better than the quikstop stuff and its natural. To prevent the scab comming off too soon, I used what we call over here in Australia - elastaplast or sticky plaster bandaids, just the sticky stuff not the padding. I cut a bit off the end of a elastaplast bandaid and place it on top of the cornstarch when it dries. It helps hold it there a little longer and gives more time for the healing to start. Also pluck any down/feathers around the area off to help it hold to the skin.
This has worked over and over for my canaries and one really silly cockatoo and it should work for any bird. It also works for feathers that snap off and bleed. You pull the feather root out and do the same thing.
I am currently starting to incubate button quails.
Training to become a vet nurse and seen the vet I work for do the same thing.
The Warden is so correct too. Firm steady pressure really slows the bleeding down, so it can be treated.