Tree branch lobbers, small ones of chicks, slightly larger ones for older birds. Quick. End of suffering. Instantaneous. Hatchet, heavy meat cleaver or similar can also work well.
Sadly, this is part of husbandry. It comes with the territory. Hatching is fun. Having lots of hens is fun too. But with having and making so many critters, the likelihood of having to face pain, suffering and terminal disease is part of the package. If we are going to do chickens, then dispatching is part of what we must accept, We feel bad, we don't enjoy this part, but we accept it as part of our responsibility. Fast, quick, determined, final.
Sadly, this is part of husbandry. It comes with the territory. Hatching is fun. Having lots of hens is fun too. But with having and making so many critters, the likelihood of having to face pain, suffering and terminal disease is part of the package. If we are going to do chickens, then dispatching is part of what we must accept, We feel bad, we don't enjoy this part, but we accept it as part of our responsibility. Fast, quick, determined, final.