how do you position it between two vertebrae? which one do you use?
If the dislocation is not caused by the physical stretching of the neck then it's a crush and not a humane method according to the HSA
I'm playing Devil's Advocate here, I don't strictly adhere to all the recommendations etc myself, just trying to highlight the topic
The HSA also say that decapitation is not a recommended method as brain activity can be present for up to 30 seconds afterwards...
I can't say I agree with that one, especially if the bird is stunned first, really how much quicker and deader can you kill something then by instantaneously removing its head