RE: Cripples
 

Wringing the neck can result in fatal neurologic trauma but it is often not a nice, tidy process. If even a minimal amount of cerebellar function remains and if the spinal cord is not severed then the bird might still breathe and could remain alive. To dispatch a bird efficiently one would do better to disrupt the oxygen delivery system. Notice that the birds you kill cleanly all have significant trauma to the oxygen delivery apparatus i.e., heart/lung damage. I suggest you put a heavy-duty plastic wire-tie (the kind used on electrical wires) around the neck and cinch it down tight. Then roll the bird up in a spare piece of camo etc. to keep it from flapping all over the place. Quick, neat, easy.

RE: Cripples
 

A friend who is a taxidermist has given me a list of what he needs to finish his showroom collection, he also gave me a finishing nail on a handle. You stick the finishing nail into the back of the head and through the skull. Its instant and you dont wreck the bird if there is a possibility of having it mounted.

RE: Cripples
 

Ring the NECK.
but I like Swamp thing's idea for possible mounts.
Ringing the neck does to much damage.

RE: Cripples
 

bite the head just behind the eyes

RE: Cripples
 

Have someone yell pull then throw it real hard! I eat all my birds so I prefer the sharp blow to the back of the head but is messy sometimes.