***warning, graphic***
Blunt loppers work better than sharp ones as the aim is to break the neck bones right through rather than take the head right off. When done there is very little blood, usually from a nick behind the head where the skin is thinnest but the head remains attached by the skin and must be removed later in the butchery process.
The cavity created when the neck bones are severed fills with blood so no need to bleed the bird until one is done plucking it which makes the process neater. As I usually process all my small animals in the kitchen, neater is better for cleanup. Turkeys are about the only things I dispatch in the great outdoors and then they come in to be finished.
Saves people having opinions on what my livestock is for really.
Poultry dispatchers - the post mounted ones - that have a cup side that the neck sits in and a metal wedge on a hinged handle that does the breaking or something like a rabbit wringer that is a v-shaped metal notched thingie. Sorry, I did try to find a picture of the ones I had many years ago but no luck.
My problem with wall mounted dispatchers of any design is that I am not tall, not strong and a turkey is a big old bird so holding it in one hand and dispatching with the other was really hard. It was hard enough with a big rooster but turkeys and geese, blimey, I didn't have enough hands, never mind strength and the coordination needed for a rabbit wringer, well, don't get me started.
The lopper way I gently and calmly hang the bird by its legs - turkeys hung up like this, for me anyway, remain nice and calm but flighty birds can have a sock put over their heads to keep them calm - fit the jaws of the loppers right behind its head and bring them shut and HANG ON until the flapping stops.
This works for rabbits, not hung up but on a table, as well. With all four feet on a solid surface, the rabbit remains calm until the deed is done.
So one tool, many uses.