Perhaps this is all just a re-enactment of a good movie:
Lord Gilbert’s sin, reportedly, is being too competitive and taking a shot he should not have, causing Sir Randolph to tell him, "You were not shooting like a gentleman, Gilbert." That may turn out to be the biggest sin here. Stumbling out of a motorcade full of retainers in order to kill pen-raised half-tame quail?? Tsk, tsk. You were not shooting like a gentleman, Dick!