Curious... how did this happen?

[SARtech]

Poor quality I realize, but I wondered if anyone would have any guesses as to how this turkey vulture got all this damage to his/her wings.

[A.M.D.A.]

Fighting other vultures for raw, de-composed meat?

You should see one of those photos where a dead cow is literally covered with dozens of bickering vultures... quite a sight.

The feather damage could also have been from a scuffle with say, a coyote, bear or another animal scanenger. They often like to eat carcasses too.