I really want to keep chickens (rented house though ) and it would be for food as well as eggs, precisely because I have children and I'm sick of people getting all shocked that meat comes from animals. Right thing to do. Well done.
I remember plucking geese that had strangled themselves trying to get away from a fox. They belonged to friends who couldn't bear to eat their pets. I must have been about 9, and didn't give it a thought, though I had "known" the geese when they were alive.
oh, I hate plucking more than killing, it's such a drag and all that fluff everywhere
another easy dispatch method is using a broom handle or plank - chicken neck under it faxcing down, foot on each side to hold it down with a quick twist of the neck at the same time. Easy, and you don't need two people to do it.