Muscle tissue of the bicep and the tricep. Meat is muscletissue. Chicken is an especially good example. The dark meat on achicken is the muscle tissue that gets the most use (legs) and thewhite meat gets the least use (wings and breast) because chickensrun around a lot but they cannot fly. The meat is different colorsbecause it is of different densities and gets different amounts ofblood during the life of the chicken. Wild birds don't have whitemeat because they use all of their muscles. That is why game birdsare described as having a much stronger flavor.