I find that if kids are not prejudiced against it they find butchering to be a very interesting thing, seeing all the body parts and what not. Unless someone has told them it's gross or disgusting or something like that they will not have any problems with it and will consider it normal. My younger two kids don't remember those days because they were 3 & 5 when we moved but my oldest one does and accepts that it is a normal part of living. Also the idea that nothing was wasted; feathers and other waste went into hot compost piles to become garden fertilizer, every part of the bird was used except the head; I saved all the backs, wings, necks, ect to make canned chicken broth for soups and we ate everything else.That look had to be something! My DD(she's 12 years) doesn't care to help with the processing part- has no trouble eating the chicken later but my DS(10 ) and DS(7) are right there on top of things and like to look at all the parts and ask questions.