What do they do with chicken parts after they butcher chicken for chicken breasts?

After butchering chickens for chicken breasts, the remaining parts, such as legs, thighs, wings, and carcasses, are typically processed for various purposes. These parts can be sold as separate cuts of meat, used for making broths and stocks, or ground for products like chicken sausage. Additionally, some parts may be used in pet food or further processed into lower-cost products. Overall, the aim is to minimize waste and maximize the use of the entire animal.