Not something anyone should look forward too, but I think there is room for respect and reasonable pride in doing the job swiftly and cleanly, to limit suffering.
Yes @Jojosine . I decapitate (holding the head in my hand) with a very SHARP! knife. I can walk from dispatch to the fire pit 40 foot away at a casual pace and the hanging bird still flaps, thile movement of the head/eye/beak usually stops about 1/3 of the way there.
Its similar to the way a...
I was going to answer, but the above pretty well has it covered.
I'll add just one thing.
It is no courtesy to hesitate. Not to you, not to the bird. Eventually, something WILL go wrong. When it inevitably does, finish the job swiftly. Then (only if you must) feel bad about it. Better...