Sing the Sorrow (AFI) Easter Egg - Rabbit Clue

When looking at the final page on the Sing The Sorrow album booklet, one can see a small rabbit illustration with handwritten text that reads "rabbits are roadkill." Coincidentally, their next album release of Decemberunderground had a rabbit illustration on the cover, and some releases of this album featured the track "Rabbits Are Roadkill On Route 37." One can only imagine why on the last page of Decemberunderground, a moth is pictured and what easter eggs will result from this.