Butchering a chicken should provide more than just a slab of meat. I would be happy with two. Then again, perhaps rethink the entire process in which you butcher a bird so that it can be applied to other birds that may be implemented later. For example:
The way it currently is, you can either punch a chicken and kill it instantly or you can pick it up and wring its neck. Either way you are left with a dead chicken. Here is where my idea comes into play.
When you have the dead chicken in hand, right clicking no longer gives you the Butcher option, instead you are given the Pluck option. This removes all feathers from the bird's body and you are left with feathers and a plucked bird.
Upon right clicking the plucked bird, you are given two more options. Butcher, or Prepare.
Butchering the bird works the same as usual, you receive the meat and bones, but when you choose Prepare, you remove the head, guts, and basically prepare to the cook the chicken whole. This presents a new cooking option Cook Whole Chicken.
What are your thoughts on my idea?