If memory serves, I wound up creating these Squirrel Diplomacy comics for some sort of compilation of web comics that wound up not happening, and actually drew them some time during Part V of the Sister story arc. Around then, anyway, if Elliot's design is any indication.
In any case, this storyline is inspired by my own adventures with bird feeders. Squirrels are the super ninjas of the animal kingdom, and they will NOT be kept from bird food.
Commentary added Dec 30, 2014