What is the theme of chapter 6

But Byron's hard exterior does conceal a softer, more emotional side. Even Kenny is not nearly as affected by the death of that bird as Byron is. Byron has never shown remorse for beating up a human, even though some of the things he has done have been pretty brutal. Now, though, he becomes sick over the fact that he has accidentally killed a bird. This response shows some small traces of the trait of the compassion already apparent in his younger siblings, and suggests that there is a lot more to Byron than meets the eye.