Yuk. I had to kill 3-4 week old chicks this winter.
Meat birds I don't mind - when it's processing time.. but the little ones I really disliked. I felt cruel and I hope I never have to do it again.
That being said, I used a sharp knife on the neck and it did the job. The key was not to think and do it fast (I mean, grab the chick from the enclosure, go wherever you plan to do it and DO IT).
My favorite was a female I thought I'd keep for eggs.
I gave her a few kisses before I had to...
Nop, wasn't the right way to go at ALL.
I wish I had a husband or a boyfriend at times like these lol.