And was confirming it since wild birds don't have jesses

That's not even how clipped wings work.

It's very noticeable when done, and it's only done to one of the wings. You can clip almost all flight feathers an the bird will still fly.

The goal is to have asymmetric wings so they cannot gain height but can still glide down to safely.

And you don't clip wings, you clip feathers.

Pretty sure wild vultures don't have leather straps on their feet.

It already looks like a Futurama character.